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- // Copyright 2010 The Go Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- // Test cases for cgo.
- // Both the import "C" prologue and the main file are sorted by issue number.
- // This file contains C definitions (not just declarations)
- // and so it must NOT contain any //export directives on Go functions.
- // See testx.go for exports.
- package cgotest
- /*
- #include <complex.h>
- #include <math.h>
- #include <stdarg.h>
- #include <stdbool.h>
- #include <stddef.h>
- #include <stdint.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #include <sys/stat.h>
- #include <errno.h>
- #cgo LDFLAGS: -lm
- #ifndef WIN32
- #include <pthread.h>
- #include <signal.h>
- #endif
- // alignment tests
- typedef unsigned char Uint8;
- typedef unsigned short Uint16;
- typedef enum {
- MOD1 = 0x0000,
- MODX = 0x8000
- } SDLMod;
- typedef enum {
- A1 = 1,
- B1 = 322,
- SDLK_LAST
- } SDLKey;
- typedef struct SDL_keysym {
- Uint8 scancode;
- SDLKey sym;
- SDLMod mod;
- Uint16 unicode;
- } SDL_keysym;
- typedef struct SDL_KeyboardEvent {
- Uint8 typ;
- Uint8 which;
- Uint8 state;
- SDL_keysym keysym;
- } SDL_KeyboardEvent;
- void makeEvent(SDL_KeyboardEvent *event) {
- unsigned char *p;
- int i;
- p = (unsigned char*)event;
- for (i=0; i<sizeof *event; i++) {
- p[i] = i;
- }
- }
- int same(SDL_KeyboardEvent* e, Uint8 typ, Uint8 which, Uint8 state, Uint8 scan, SDLKey sym, SDLMod mod, Uint16 uni) {
- return e->typ == typ && e->which == which && e->state == state && e->keysym.scancode == scan && e->keysym.sym == sym && e->keysym.mod == mod && e->keysym.unicode == uni;
- }
- void cTest(SDL_KeyboardEvent *event) {
- printf("C: %#x %#x %#x %#x %#x %#x %#x\n", event->typ, event->which, event->state,
- event->keysym.scancode, event->keysym.sym, event->keysym.mod, event->keysym.unicode);
- fflush(stdout);
- }
- // api
- const char *greeting = "hello, world";
- // basic test cases
- #define SHIFT(x, y) ((x)<<(y))
- #define KILO SHIFT(1, 10)
- #define UINT32VAL 0xc008427bU
- enum E {
- Enum1 = 1,
- Enum2 = 2,
- };
- typedef unsigned char cgo_uuid_t[20];
- void uuid_generate(cgo_uuid_t x) {
- x[0] = 0;
- }
- struct S {
- int x;
- };
- const char *cstr = "abcefghijklmnopqrstuvwxyzABCEFGHIJKLMNOPQRSTUVWXYZ1234567890";
- extern enum E myConstFunc(struct S* const ctx, int const id, struct S **const filter);
- enum E myConstFunc(struct S *const ctx, int const id, struct S **const filter) { return 0; }
- int add(int x, int y) {
- return x+y;
- };
- // Following mimicks vulkan complex definitions for benchmarking cgocheck overhead.
- typedef uint32_t VkFlags;
- typedef VkFlags VkDeviceQueueCreateFlags;
- typedef uint32_t VkStructureType;
- typedef struct VkDeviceQueueCreateInfo {
- VkStructureType sType;
- const void* pNext;
- VkDeviceQueueCreateFlags flags;
- uint32_t queueFamilyIndex;
- uint32_t queueCount;
- const float* pQueuePriorities;
- } VkDeviceQueueCreateInfo;
- typedef struct VkPhysicalDeviceFeatures {
- uint32_t bools[56];
- } VkPhysicalDeviceFeatures;
- typedef struct VkDeviceCreateInfo {
- VkStructureType sType;
- const void* pNext;
- VkFlags flags;
- uint32_t queueCreateInfoCount;
- const VkDeviceQueueCreateInfo* pQueueCreateInfos;
- uint32_t enabledLayerCount;
- const char* const* ppEnabledLayerNames;
- uint32_t enabledExtensionCount;
- const char* const* ppEnabledExtensionNames;
- const VkPhysicalDeviceFeatures* pEnabledFeatures;
- } VkDeviceCreateInfo;
- void handleComplexPointer(VkDeviceCreateInfo *a0) {}
- void handleComplexPointer8(
- VkDeviceCreateInfo *a0, VkDeviceCreateInfo *a1, VkDeviceCreateInfo *a2, VkDeviceCreateInfo *a3,
- VkDeviceCreateInfo *a4, VkDeviceCreateInfo *a5, VkDeviceCreateInfo *a6, VkDeviceCreateInfo *a7
- ) {}
- // complex alignment
- struct {
- float x;
- _Complex float y;
- } cplxAlign = { 3.14, 2.17 };
- // constants and pointer checking
- #define CheckConstVal 0
- typedef struct {
- int *p;
- } CheckConstStruct;
- static void CheckConstFunc(CheckConstStruct *p, int e) {}
- // duplicate symbol
- int base_symbol = 0;
- #define alias_one base_symbol
- #define alias_two base_symbol
- // function pointer variables
- typedef int (*intFunc) ();
- int
- bridge_int_func(intFunc f)
- {
- return f();
- }
- int fortytwo()
- {
- return 42;
- }
- // issue 1222
- typedef union {
- long align;
- } xxpthread_mutex_t;
- struct ibv_async_event {
- union {
- int x;
- } element;
- };
- struct ibv_context {
- xxpthread_mutex_t mutex;
- };
- // issue 1635
- // Mac OS X's gcc will generate scattered relocation 2/1 for
- // this function on Darwin/386, and 8l couldn't handle it.
- // this example is in issue 1635
- void scatter() {
- void *p = scatter;
- printf("scatter = %p\n", p);
- }
- // Adding this explicit extern declaration makes this a test for
- // https://gcc.gnu.org/PR68072 aka https://golang.org/issue/13344 .
- // It used to cause a cgo error when building with GCC 6.
- extern int hola;
- // this example is in issue 3253
- int hola = 0;
- int testHola() { return hola; }
- // issue 3250
- #ifdef WIN32
- void testSendSIG() {}
- #else
- static void *thread(void *p) {
- const int M = 100;
- int i;
- (void)p;
- for (i = 0; i < M; i++) {
- pthread_kill(pthread_self(), SIGCHLD);
- usleep(rand() % 20 + 5);
- }
- return NULL;
- }
- void testSendSIG() {
- const int N = 20;
- int i;
- pthread_t tid[N];
- for (i = 0; i < N; i++) {
- usleep(rand() % 200 + 100);
- pthread_create(&tid[i], 0, thread, NULL);
- }
- for (i = 0; i < N; i++)
- pthread_join(tid[i], 0);
- }
- #endif
- // issue 3261
- // libgcc on ARM might be compiled as thumb code, but our 5l
- // can't handle that, so we have to disable this test on arm.
- #ifdef __ARMEL__
- int vabs(int x) {
- puts("testLibgcc is disabled on ARM because 5l cannot handle thumb library.");
- return (x < 0) ? -x : x;
- }
- #elif defined(__arm64__) && defined(__clang__)
- int vabs(int x) {
- puts("testLibgcc is disabled on ARM64 with clang due to lack of libgcc.");
- return (x < 0) ? -x : x;
- }
- #else
- int __absvsi2(int); // dummy prototype for libgcc function
- // we shouldn't name the function abs, as gcc might use
- // the builtin one.
- int vabs(int x) { return __absvsi2(x); }
- #endif
- // issue 3729
- // access errno from void C function
- const char _expA = 0x42;
- const float _expB = 3.14159;
- const short _expC = 0x55aa;
- const int _expD = 0xdeadbeef;
- #ifdef WIN32
- void g(void) {}
- void g2(int x, char a, float b, short c, int d) {}
- #else
- void g(void) {
- errno = E2BIG;
- }
- // try to pass some non-trivial arguments to function g2
- void g2(int x, char a, float b, short c, int d) {
- if (a == _expA && b == _expB && c == _expC && d == _expD)
- errno = x;
- else
- errno = -1;
- }
- #endif
- // issue 3945
- // Test that cgo reserves enough stack space during cgo call.
- // See https://golang.org/issue/3945 for details.
- void say() {
- printf("%s from C\n", "hello");
- }
- // issue 4054 part 1 - other half in testx.go
- typedef enum {
- A = 0,
- B,
- C,
- D,
- E,
- F,
- G,
- H,
- II,
- J,
- } issue4054a;
- // issue 4339
- // We've historically permitted #include <>, so test it here. Issue 29333.
- // Also see issue 41059.
- #include <issue4339.h>
- // issue 4417
- // cmd/cgo: bool alignment/padding issue.
- // bool alignment is wrong and causing wrong arguments when calling functions.
- static int c_bool(bool a, bool b, int c, bool d, bool e) {
- return c;
- }
- // issue 4857
- #cgo CFLAGS: -Werror
- const struct { int a; } *issue4857() { return (void *)0; }
- // issue 5224
- // Test that the #cgo CFLAGS directive works,
- // with and without platform filters.
- #cgo CFLAGS: -DCOMMON_VALUE=123
- #cgo windows CFLAGS: -DIS_WINDOWS=1
- #cgo !windows CFLAGS: -DIS_WINDOWS=0
- int common = COMMON_VALUE;
- int is_windows = IS_WINDOWS;
- // issue 5227
- // linker incorrectly treats common symbols and
- // leaves them undefined.
- typedef struct {
- int Count;
- } Fontinfo;
- Fontinfo SansTypeface;
- extern void init();
- Fontinfo loadfont() {
- Fontinfo f = {0};
- return f;
- }
- void init() {
- SansTypeface = loadfont();
- }
- // issue 5242
- // Cgo incorrectly computed the alignment of structs
- // with no Go accessible fields as 0, and then panicked on
- // modulo-by-zero computations.
- // issue 50987
- // disable arm64 GCC warnings
- #cgo CFLAGS: -Wno-psabi -Wno-unknown-warning-option
- typedef struct {
- } foo;
- typedef struct {
- int x : 1;
- } bar;
- int issue5242(foo f, bar b) {
- return 5242;
- }
- // issue 5337
- // Verify that we can withstand SIGPROF received on foreign threads
- #ifdef WIN32
- void test5337() {}
- #else
- static void *thread1(void *p) {
- (void)p;
- pthread_kill(pthread_self(), SIGPROF);
- return NULL;
- }
- void test5337() {
- pthread_t tid;
- pthread_create(&tid, 0, thread1, NULL);
- pthread_join(tid, 0);
- }
- #endif
- // issue 5603
- const long long issue5603exp = 0x12345678;
- long long issue5603foo0() { return issue5603exp; }
- long long issue5603foo1(void *p) { return issue5603exp; }
- long long issue5603foo2(void *p, void *q) { return issue5603exp; }
- long long issue5603foo3(void *p, void *q, void *r) { return issue5603exp; }
- long long issue5603foo4(void *p, void *q, void *r, void *s) { return issue5603exp; }
- // issue 5740
- int test5740a(void), test5740b(void);
- // issue 5986
- static void output5986()
- {
- int current_row = 0, row_count = 0;
- double sum_squares = 0;
- double d;
- do {
- if (current_row == 10) {
- current_row = 0;
- }
- ++row_count;
- }
- while (current_row++ != 1);
- d = sqrt(sum_squares / row_count);
- printf("sqrt is: %g\n", d);
- }
- // issue 6128
- // Test handling of #defined names in clang.
- // NOTE: Must use hex, or else a shortcut for decimals
- // in cgo avoids trying to pass this to clang.
- #define X 0x1
- // issue 6472
- typedef struct
- {
- struct
- {
- int x;
- } y[16];
- } z;
- // issue 6612
- // Test new scheme for deciding whether C.name is an expression, type, constant.
- // Clang silences some warnings when the name is a #defined macro, so test those too
- // (even though we now use errors exclusively, not warnings).
- void myfunc(void) {}
- int myvar = 5;
- const char *mytext = "abcdef";
- typedef int mytype;
- enum {
- myenum = 1234,
- };
- #define myfunc_def myfunc
- #define myvar_def myvar
- #define mytext_def mytext
- #define mytype_def mytype
- #define myenum_def myenum
- #define myint_def 12345
- #define myfloat_def 1.5
- #define mystring_def "hello"
- // issue 6907
- char* Issue6907CopyString(_GoString_ s) {
- size_t n;
- const char *p;
- char *r;
- n = _GoStringLen(s);
- p = _GoStringPtr(s);
- r = malloc(n + 1);
- memmove(r, p, n);
- r[n] = '\0';
- return r;
- }
- // issue 7560
- typedef struct {
- char x;
- long y;
- } __attribute__((__packed__)) misaligned;
- int
- offset7560(void)
- {
- return (uintptr_t)&((misaligned*)0)->y;
- }
- // issue 7786
- // No runtime test, just make sure that typedef and struct/union/class are interchangeable at compile time.
- struct test7786;
- typedef struct test7786 typedef_test7786;
- void f7786(struct test7786 *ctx) {}
- void g7786(typedef_test7786 *ctx) {}
- typedef struct body7786 typedef_body7786;
- struct body7786 { int x; };
- void b7786(struct body7786 *ctx) {}
- void c7786(typedef_body7786 *ctx) {}
- typedef union union7786 typedef_union7786;
- void u7786(union union7786 *ctx) {}
- void v7786(typedef_union7786 *ctx) {}
- // issue 8092
- // Test that linker defined symbols (e.g., text, data) don't
- // conflict with C symbols.
- char text[] = "text";
- char data[] = "data";
- char *ctext(void) { return text; }
- char *cdata(void) { return data; }
- // issue 8428
- // Cgo inconsistently translated zero size arrays.
- struct issue8428one {
- char b;
- char rest[];
- };
- struct issue8428two {
- void *p;
- char b;
- char rest[0];
- char pad;
- };
- struct issue8428three {
- char w[1][2][3][0];
- char x[2][3][0][1];
- char y[3][0][1][2];
- char z[0][1][2][3];
- };
- // issue 8331 part 1 - part 2 in testx.go
- // A typedef of an unnamed struct is the same struct when
- // #include'd twice. No runtime test; just make sure it compiles.
- #include "issue8331.h"
- // issue 8368 and 8441
- // Recursive struct definitions didn't work.
- // No runtime test; just make sure it compiles.
- typedef struct one one;
- typedef struct two two;
- struct one {
- two *x;
- };
- struct two {
- one *x;
- };
- // issue 8811
- extern int issue8811Initialized;
- extern void issue8811Init();
- void issue8811Execute() {
- if(!issue8811Initialized)
- issue8811Init();
- }
- // issue 8945
- typedef void (*PFunc8945)();
- PFunc8945 func8945;
- // issue 9557
- struct issue9557_t {
- int a;
- } test9557bar = { 42 };
- struct issue9557_t *issue9557foo = &test9557bar;
- // issue 10303
- // Pointers passed to C were not marked as escaping (bug in cgo).
- typedef int *intptr;
- void setintstar(int *x) {
- *x = 1;
- }
- void setintptr(intptr x) {
- *x = 1;
- }
- void setvoidptr(void *x) {
- *(int*)x = 1;
- }
- typedef struct Struct Struct;
- struct Struct {
- int *P;
- };
- void setstruct(Struct s) {
- *s.P = 1;
- }
- // issue 11925
- // Structs with zero-length trailing fields are now padded by the Go compiler.
- struct a11925 {
- int i;
- char a[0];
- char b[0];
- };
- struct b11925 {
- int i;
- char a[0];
- char b[];
- };
- // issue 12030
- void issue12030conv(char *buf, double x) {
- sprintf(buf, "d=%g", x);
- }
- // issue 14838
- int check_cbytes(char *b, size_t l) {
- int i;
- for (i = 0; i < l; i++) {
- if (b[i] != i) {
- return 0;
- }
- }
- return 1;
- }
- // issue 17065
- // Test that C symbols larger than a page play nicely with the race detector.
- int ii[65537];
- // issue 17537
- // The void* cast introduced by cgo to avoid problems
- // with const/volatile qualifiers breaks C preprocessor macros that
- // emulate functions.
- typedef struct {
- int i;
- } S17537;
- int I17537(S17537 *p);
- #define I17537(p) ((p)->i)
- // Calling this function used to fail without the cast.
- const int F17537(const char **p) {
- return **p;
- }
- // issue 17723
- // API compatibility checks
- typedef char *cstring_pointer;
- static void cstring_pointer_fun(cstring_pointer dummy) { }
- const char *api_hello = "hello!";
- // Calling this function used to trigger an error from the C compiler
- // (issue 18298).
- void F18298(const void *const *p) {
- }
- // Test that conversions between typedefs work as they used to.
- typedef const void *T18298_1;
- struct S18298 { int i; };
- typedef const struct S18298 *T18298_2;
- void G18298(T18298_1 t) {
- }
- // issue 18126
- // cgo check of void function returning errno.
- void Issue18126C(void **p) {}
- // issue 18720
- #define HELLO "hello"
- #define WORLD "world"
- #define HELLO_WORLD HELLO "\000" WORLD
- struct foo { char c; };
- #define SIZE_OF(x) sizeof(x)
- #define SIZE_OF_FOO SIZE_OF(struct foo)
- #define VAR1 VAR
- #define VAR var
- int var = 5;
- #define ADDR &var
- #define CALL fn()
- int fn(void) {
- return ++var;
- }
- // issue 20129
- int issue20129 = 0;
- typedef void issue20129Void;
- issue20129Void issue20129Foo() {
- issue20129 = 1;
- }
- typedef issue20129Void issue20129Void2;
- issue20129Void2 issue20129Bar() {
- issue20129 = 2;
- }
- // issue 20369
- #define XUINT64_MAX 18446744073709551615ULL
- // issue 21668
- // Fail to guess the kind of the constant "x".
- // No runtime test; just make sure it compiles.
- const int x21668 = 42;
- // issue 21708
- #define CAST_TO_INT64 (int64_t)(-1)
- // issue 21809
- // Compile C `typedef` to go type aliases.
- typedef long MySigned_t;
- // tests alias-to-alias
- typedef MySigned_t MySigned2_t;
- long takes_long(long x) { return x * x; }
- MySigned_t takes_typedef(MySigned_t x) { return x * x; }
- // issue 22906
- // It's going to be hard to include a whole real JVM to test this.
- // So we'll simulate a really easy JVM using just the parts we need.
- // This is the relevant part of jni.h.
- struct _jobject;
- typedef struct _jobject *jobject;
- typedef jobject jclass;
- typedef jobject jthrowable;
- typedef jobject jstring;
- typedef jobject jarray;
- typedef jarray jbooleanArray;
- typedef jarray jbyteArray;
- typedef jarray jcharArray;
- typedef jarray jshortArray;
- typedef jarray jintArray;
- typedef jarray jlongArray;
- typedef jarray jfloatArray;
- typedef jarray jdoubleArray;
- typedef jarray jobjectArray;
- typedef jobject jweak;
- // Note: jvalue is already a non-pointer type due to it being a C union.
- // issue 22958
- typedef struct {
- unsigned long long f8 : 8;
- unsigned long long f16 : 16;
- unsigned long long f24 : 24;
- unsigned long long f32 : 32;
- unsigned long long f40 : 40;
- unsigned long long f48 : 48;
- unsigned long long f56 : 56;
- unsigned long long f64 : 64;
- } issue22958Type;
- // issue 23356
- int a(void) { return 5; };
- int r(void) { return 3; };
- // issue 23720
- typedef int *issue23720A;
- typedef const int *issue23720B;
- void issue23720F(issue23720B a) {}
- // issue 24206
- #if defined(__linux__) && defined(__x86_64__)
- #include <sys/mman.h>
- // Returns string with null byte at the last valid address
- char* dangerousString1() {
- int pageSize = 4096;
- char *data = mmap(0, 2 * pageSize, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, 0, 0);
- mprotect(data + pageSize,pageSize,PROT_NONE);
- int start = pageSize - 123 - 1; // last 123 bytes of first page + 1 null byte
- int i = start;
- for (; i < pageSize; i++) {
- data[i] = 'x';
- }
- data[pageSize -1 ] = 0;
- return data+start;
- }
- char* dangerousString2() {
- int pageSize = 4096;
- char *data = mmap(0, 3 * pageSize, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, 0, 0);
- mprotect(data + 2 * pageSize,pageSize,PROT_NONE);
- int start = pageSize - 123 - 1; // last 123 bytes of first page + 1 null byte
- int i = start;
- for (; i < 2 * pageSize; i++) {
- data[i] = 'x';
- }
- data[2*pageSize -1 ] = 0;
- return data+start;
- }
- #else
- char *dangerousString1() { return NULL; }
- char *dangerousString2() { return NULL; }
- #endif
- // issue 26066
- const unsigned long long int issue26066 = (const unsigned long long) -1;
- // issue 26517
- // Introduce two pointer types which are distinct, but have the same
- // base type. Make sure that both of those pointer types get resolved
- // correctly. Before the fix for 26517 if one of these pointer types
- // was resolved before the other one was processed, the second one
- // would never be resolved.
- // Before this issue was fixed this test failed on Windows,
- // where va_list expands to a named char* type.
- typedef va_list TypeOne;
- typedef char *TypeTwo;
- // issue 28540
- static void twoargs1(void *p, int n) {}
- static void *twoargs2() { return 0; }
- static int twoargs3(void * p) { return 0; }
- // issue 28545
- // Failed to add type conversion for negative constant.
- static void issue28545F(char **p, int n, complex double a) {}
- // issue 28772 part 1 - part 2 in testx.go
- // Failed to add type conversion for Go constant set to C constant.
- // No runtime test; just make sure it compiles.
- #define issue28772Constant 1
- // issue 28896
- // cgo was incorrectly adding padding after a packed struct.
- typedef struct {
- void *f1;
- uint32_t f2;
- } __attribute__((__packed__)) innerPacked;
- typedef struct {
- innerPacked g1;
- uint64_t g2;
- } outerPacked;
- typedef struct {
- void *f1;
- uint32_t f2;
- } innerUnpacked;
- typedef struct {
- innerUnpacked g1;
- uint64_t g2;
- } outerUnpacked;
- size_t offset(int x) {
- switch (x) {
- case 0:
- return offsetof(innerPacked, f2);
- case 1:
- return offsetof(outerPacked, g2);
- case 2:
- return offsetof(innerUnpacked, f2);
- case 3:
- return offsetof(outerUnpacked, g2);
- default:
- abort();
- }
- }
- // issue 29748
- typedef struct { char **p; } S29748;
- static int f29748(S29748 *p) { return 0; }
- // issue 29781
- // Error with newline inserted into constant expression.
- // Compilation test only, nothing to run.
- static void issue29781F(char **p, int n) {}
- #define ISSUE29781C 0
- // issue 31093
- static uint16_t issue31093F(uint16_t v) { return v; }
- // issue 32579
- typedef struct S32579 { unsigned char data[1]; } S32579;
- // issue 37033, cgo.Handle
- extern void GoFunc37033(uintptr_t handle);
- void cFunc37033(uintptr_t handle) { GoFunc37033(handle); }
- // issue 38649
- // Test that #define'd type aliases work.
- #define netbsd_gid unsigned int
- // issue 40494
- // Inconsistent handling of tagged enum and union types.
- enum Enum40494 { X_40494 };
- union Union40494 { int x; };
- void issue40494(enum Enum40494 e, union Union40494* up) {}
- // Issue 45451, bad handling of go:notinheap types.
- typedef struct issue45451Undefined issue45451;
- // Issue 49633, example of cgo.Handle with void*.
- extern void GoFunc49633(void*);
- void cfunc49633(void *context) { GoFunc49633(context); }
- */
- import "C"
- import (
- "context"
- "fmt"
- "math"
- "math/rand"
- "os"
- "os/signal"
- "reflect"
- "runtime"
- "runtime/cgo"
- "sync"
- "syscall"
- "testing"
- "time"
- "unsafe"
- )
- // alignment
- func testAlign(t *testing.T) {
- var evt C.SDL_KeyboardEvent
- C.makeEvent(&evt)
- if C.same(&evt, evt.typ, evt.which, evt.state, evt.keysym.scancode, evt.keysym.sym, evt.keysym.mod, evt.keysym.unicode) == 0 {
- t.Error("*** bad alignment")
- C.cTest(&evt)
- t.Errorf("Go: %#x %#x %#x %#x %#x %#x %#x\n",
- evt.typ, evt.which, evt.state, evt.keysym.scancode,
- evt.keysym.sym, evt.keysym.mod, evt.keysym.unicode)
- t.Error(evt)
- }
- }
- // api
- const greeting = "hello, world"
- type testPair struct {
- Name string
- Got, Want interface{}
- }
- var testPairs = []testPair{
- {"GoString", C.GoString(C.greeting), greeting},
- {"GoStringN", C.GoStringN(C.greeting, 5), greeting[:5]},
- {"GoBytes", C.GoBytes(unsafe.Pointer(C.greeting), 5), []byte(greeting[:5])},
- }
- func testHelpers(t *testing.T) {
- for _, pair := range testPairs {
- if !reflect.DeepEqual(pair.Got, pair.Want) {
- t.Errorf("%s: got %#v, want %#v", pair.Name, pair.Got, pair.Want)
- }
- }
- }
- // basic test cases
- const EINVAL = C.EINVAL /* test #define */
- var KILO = C.KILO
- func uuidgen() {
- var uuid C.cgo_uuid_t
- C.uuid_generate(&uuid[0])
- }
- func Strtol(s string, base int) (int, error) {
- p := C.CString(s)
- n, err := C.strtol(p, nil, C.int(base))
- C.free(unsafe.Pointer(p))
- return int(n), err
- }
- func Atol(s string) int {
- p := C.CString(s)
- n := C.atol(p)
- C.free(unsafe.Pointer(p))
- return int(n)
- }
- func testConst(t *testing.T) {
- C.myConstFunc(nil, 0, nil)
- }
- func testEnum(t *testing.T) {
- if C.Enum1 != 1 || C.Enum2 != 2 {
- t.Error("bad enum", C.Enum1, C.Enum2)
- }
- }
- func testNamedEnum(t *testing.T) {
- e := new(C.enum_E)
- *e = C.Enum1
- if *e != 1 {
- t.Error("bad enum", C.Enum1)
- }
- *e = C.Enum2
- if *e != 2 {
- t.Error("bad enum", C.Enum2)
- }
- }
- func testCastToEnum(t *testing.T) {
- e := C.enum_E(C.Enum1)
- if e != 1 {
- t.Error("bad enum", C.Enum1)
- }
- e = C.enum_E(C.Enum2)
- if e != 2 {
- t.Error("bad enum", C.Enum2)
- }
- }
- func testAtol(t *testing.T) {
- l := Atol("123")
- if l != 123 {
- t.Error("Atol 123: ", l)
- }
- }
- func testErrno(t *testing.T) {
- p := C.CString("no-such-file")
- m := C.CString("r")
- f, err := C.fopen(p, m)
- C.free(unsafe.Pointer(p))
- C.free(unsafe.Pointer(m))
- if err == nil {
- C.fclose(f)
- t.Fatalf("C.fopen: should fail")
- }
- if err != syscall.ENOENT {
- t.Fatalf("C.fopen: unexpected error: %v", err)
- }
- }
- func testMultipleAssign(t *testing.T) {
- p := C.CString("234")
- n, m := C.strtol(p, nil, 345), C.strtol(p, nil, 10)
- if runtime.GOOS == "openbsd" {
- // Bug in OpenBSD strtol(3) - base > 36 succeeds.
- if (n != 0 && n != 239089) || m != 234 {
- t.Fatal("Strtol x2: ", n, m)
- }
- } else if n != 0 || m != 234 {
- t.Fatal("Strtol x2: ", n, m)
- }
- C.free(unsafe.Pointer(p))
- }
- var (
- cuint = (C.uint)(0)
- culong C.ulong
- cchar C.char
- )
- type Context struct {
- ctx *C.struct_ibv_context
- }
- func benchCgoCall(b *testing.B) {
- b.Run("add-int", func(b *testing.B) {
- const x = C.int(2)
- const y = C.int(3)
- for i := 0; i < b.N; i++ {
- C.add(x, y)
- }
- })
- b.Run("one-pointer", func(b *testing.B) {
- var a0 C.VkDeviceCreateInfo
- for i := 0; i < b.N; i++ {
- C.handleComplexPointer(&a0)
- }
- })
- b.Run("eight-pointers", func(b *testing.B) {
- var a0, a1, a2, a3, a4, a5, a6, a7 C.VkDeviceCreateInfo
- for i := 0; i < b.N; i++ {
- C.handleComplexPointer8(&a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7)
- }
- })
- b.Run("eight-pointers-nil", func(b *testing.B) {
- var a0, a1, a2, a3, a4, a5, a6, a7 *C.VkDeviceCreateInfo
- for i := 0; i < b.N; i++ {
- C.handleComplexPointer8(a0, a1, a2, a3, a4, a5, a6, a7)
- }
- })
- b.Run("eight-pointers-array", func(b *testing.B) {
- var a [8]C.VkDeviceCreateInfo
- for i := 0; i < b.N; i++ {
- C.handleComplexPointer8(&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6], &a[7])
- }
- })
- b.Run("eight-pointers-slice", func(b *testing.B) {
- a := make([]C.VkDeviceCreateInfo, 8)
- for i := 0; i < b.N; i++ {
- C.handleComplexPointer8(&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6], &a[7])
- }
- })
- }
- // Benchmark measuring overhead from Go to C and back to Go (via a callback)
- func benchCallback(b *testing.B) {
- var x = false
- for i := 0; i < b.N; i++ {
- nestedCall(func() { x = true })
- }
- if !x {
- b.Fatal("nestedCall was not invoked")
- }
- }
- var sinkString string
- func benchGoString(b *testing.B) {
- for i := 0; i < b.N; i++ {
- sinkString = C.GoString(C.cstr)
- }
- const want = "abcefghijklmnopqrstuvwxyzABCEFGHIJKLMNOPQRSTUVWXYZ1234567890"
- if sinkString != want {
- b.Fatalf("%q != %q", sinkString, want)
- }
- }
- // Static (build-time) test that syntax traversal visits all operands of s[i:j:k].
- func sliceOperands(array [2000]int) {
- _ = array[C.KILO:C.KILO:C.KILO] // no type error
- }
- // set in cgo_thread_lock.go init
- var testThreadLockFunc = func(*testing.T) {}
- // complex alignment
- func TestComplexAlign(t *testing.T) {
- if C.cplxAlign.x != 3.14 {
- t.Errorf("got %v, expected 3.14", C.cplxAlign.x)
- }
- if C.cplxAlign.y != 2.17 {
- t.Errorf("got %v, expected 2.17", C.cplxAlign.y)
- }
- }
- // constants and pointer checking
- func testCheckConst(t *testing.T) {
- // The test is that this compiles successfully.
- p := C.malloc(C.size_t(unsafe.Sizeof(C.int(0))))
- defer C.free(p)
- C.CheckConstFunc(&C.CheckConstStruct{(*C.int)(p)}, C.CheckConstVal)
- }
- // duplicate symbol
- func duplicateSymbols() {
- fmt.Printf("%v %v %v\n", C.base_symbol, C.alias_one, C.alias_two)
- }
- // environment
- // This is really an os package test but here for convenience.
- func testSetEnv(t *testing.T) {
- if runtime.GOOS == "windows" {
- // Go uses SetEnvironmentVariable on windows. However,
- // C runtime takes a *copy* at process startup of the
- // OS environment, and stores it in environ/envp.
- // It is this copy that getenv/putenv manipulate.
- t.Logf("skipping test")
- return
- }
- const key = "CGO_OS_TEST_KEY"
- const val = "CGO_OS_TEST_VALUE"
- os.Setenv(key, val)
- keyc := C.CString(key)
- defer C.free(unsafe.Pointer(keyc))
- v := C.getenv(keyc)
- if uintptr(unsafe.Pointer(v)) == 0 {
- t.Fatal("getenv returned NULL")
- }
- vs := C.GoString(v)
- if vs != val {
- t.Fatalf("getenv() = %q; want %q", vs, val)
- }
- }
- // function pointer variables
- func callBridge(f C.intFunc) int {
- return int(C.bridge_int_func(f))
- }
- func callCBridge(f C.intFunc) C.int {
- return C.bridge_int_func(f)
- }
- func testFpVar(t *testing.T) {
- const expected = 42
- f := C.intFunc(C.fortytwo)
- res1 := C.bridge_int_func(f)
- if r1 := int(res1); r1 != expected {
- t.Errorf("got %d, want %d", r1, expected)
- }
- res2 := callCBridge(f)
- if r2 := int(res2); r2 != expected {
- t.Errorf("got %d, want %d", r2, expected)
- }
- r3 := callBridge(f)
- if r3 != expected {
- t.Errorf("got %d, want %d", r3, expected)
- }
- }
- // issue 1222
- type AsyncEvent struct {
- event C.struct_ibv_async_event
- }
- // issue 1635
- func test1635(t *testing.T) {
- C.scatter()
- if v := C.hola; v != 0 {
- t.Fatalf("C.hola is %d, should be 0", v)
- }
- if v := C.testHola(); v != 0 {
- t.Fatalf("C.testHola() is %d, should be 0", v)
- }
- }
- // issue 2470
- func testUnsignedInt(t *testing.T) {
- a := (int64)(C.UINT32VAL)
- b := (int64)(0xc008427b)
- if a != b {
- t.Errorf("Incorrect unsigned int - got %x, want %x", a, b)
- }
- }
- // issue 3250
- func test3250(t *testing.T) {
- if runtime.GOOS == "windows" {
- t.Skip("not applicable on windows")
- }
- t.Skip("skipped, see golang.org/issue/5885")
- var (
- thres = 1
- sig = syscall_dot_SIGCHLD
- )
- type result struct {
- n int
- sig os.Signal
- }
- var (
- sigCh = make(chan os.Signal, 10)
- waitStart = make(chan struct{})
- waitDone = make(chan result)
- )
- signal.Notify(sigCh, sig)
- go func() {
- n := 0
- alarm := time.After(time.Second * 3)
- for {
- select {
- case <-waitStart:
- waitStart = nil
- case v := <-sigCh:
- n++
- if v != sig || n > thres {
- waitDone <- result{n, v}
- return
- }
- case <-alarm:
- waitDone <- result{n, sig}
- return
- }
- }
- }()
- waitStart <- struct{}{}
- C.testSendSIG()
- r := <-waitDone
- if r.sig != sig {
- t.Fatalf("received signal %v, but want %v", r.sig, sig)
- }
- t.Logf("got %d signals\n", r.n)
- if r.n <= thres {
- t.Fatalf("expected more than %d", thres)
- }
- }
- // issue 3261
- func testLibgcc(t *testing.T) {
- var table = []struct {
- in, out C.int
- }{
- {0, 0},
- {1, 1},
- {-42, 42},
- {1000300, 1000300},
- {1 - 1<<31, 1<<31 - 1},
- }
- for _, v := range table {
- if o := C.vabs(v.in); o != v.out {
- t.Fatalf("abs(%d) got %d, should be %d", v.in, o, v.out)
- return
- }
- }
- }
- // issue 3729
- func test3729(t *testing.T) {
- if runtime.GOOS == "windows" {
- t.Skip("skipping on windows")
- }
- _, e := C.g()
- if e != syscall.E2BIG {
- t.Errorf("got %q, expect %q", e, syscall.E2BIG)
- }
- _, e = C.g2(C.EINVAL, C._expA, C._expB, C._expC, C._expD)
- if e != syscall.EINVAL {
- t.Errorf("got %q, expect %q", e, syscall.EINVAL)
- }
- }
- // issue 3945
- func testPrintf(t *testing.T) {
- C.say()
- }
- // issue 4054
- var issue4054a = []int{C.A, C.B, C.C, C.D, C.E, C.F, C.G, C.H, C.I, C.J}
- // issue 4339
- func test4339(t *testing.T) {
- C.handle4339(&C.exported4339)
- }
- // issue 4417
- func testBoolAlign(t *testing.T) {
- b := C.c_bool(true, true, 10, true, false)
- if b != 10 {
- t.Fatalf("found %d expected 10\n", b)
- }
- b = C.c_bool(true, true, 5, true, true)
- if b != 5 {
- t.Fatalf("found %d expected 5\n", b)
- }
- b = C.c_bool(true, true, 3, true, false)
- if b != 3 {
- t.Fatalf("found %d expected 3\n", b)
- }
- b = C.c_bool(false, false, 1, true, false)
- if b != 1 {
- t.Fatalf("found %d expected 1\n", b)
- }
- b = C.c_bool(false, true, 200, true, false)
- if b != 200 {
- t.Fatalf("found %d expected 200\n", b)
- }
- }
- // issue 4857
- func test4857() {
- _ = C.issue4857()
- }
- // issue 5224
- func testCflags(t *testing.T) {
- is_windows := C.is_windows == 1
- if is_windows != (runtime.GOOS == "windows") {
- t.Errorf("is_windows: %v, runtime.GOOS: %s", is_windows, runtime.GOOS)
- }
- if C.common != 123 {
- t.Errorf("common: %v (expected 123)", C.common)
- }
- }
- // issue 5227
- func test5227(t *testing.T) {
- C.init()
- }
- func selectfont() C.Fontinfo {
- return C.SansTypeface
- }
- // issue 5242
- func test5242(t *testing.T) {
- if got := C.issue5242(C.foo{}, C.bar{}); got != 5242 {
- t.Errorf("got %v", got)
- }
- }
- func test5603(t *testing.T) {
- var x [5]int64
- exp := int64(C.issue5603exp)
- x[0] = int64(C.issue5603foo0())
- x[1] = int64(C.issue5603foo1(nil))
- x[2] = int64(C.issue5603foo2(nil, nil))
- x[3] = int64(C.issue5603foo3(nil, nil, nil))
- x[4] = int64(C.issue5603foo4(nil, nil, nil, nil))
- for i, v := range x {
- if v != exp {
- t.Errorf("issue5603foo%d() returns %v, expected %v", i, v, exp)
- }
- }
- }
- // issue 5337
- func test5337(t *testing.T) {
- C.test5337()
- }
- // issue 5740
- func test5740(t *testing.T) {
- if v := C.test5740a() + C.test5740b(); v != 5 {
- t.Errorf("expected 5, got %v", v)
- }
- }
- // issue 5986
- func test5986(t *testing.T) {
- C.output5986()
- }
- // issue 6128
- func test6128() {
- // nothing to run, just make sure this compiles.
- _ = C.X
- }
- // issue 6390
- func test6390(t *testing.T) {
- p1 := C.malloc(1024)
- if p1 == nil {
- t.Fatalf("C.malloc(1024) returned nil")
- }
- p2 := C.malloc(0)
- if p2 == nil {
- t.Fatalf("C.malloc(0) returned nil")
- }
- C.free(p1)
- C.free(p2)
- }
- func test6472() {
- // nothing to run, just make sure this compiles
- s := new(C.z)
- println(s.y[0].x)
- }
- // issue 6506
- func test6506() {
- // nothing to run, just make sure this compiles
- var x C.size_t
- C.calloc(x, x)
- C.malloc(x)
- C.realloc(nil, x)
- C.memcpy(nil, nil, x)
- C.memcmp(nil, nil, x)
- C.memmove(nil, nil, x)
- C.strncpy(nil, nil, x)
- C.strncmp(nil, nil, x)
- C.strncat(nil, nil, x)
- x = C.strxfrm(nil, nil, x)
- C.memchr(nil, 0, x)
- x = C.strcspn(nil, nil)
- x = C.strspn(nil, nil)
- C.memset(nil, 0, x)
- x = C.strlen(nil)
- _ = x
- }
- // issue 6612
- func testNaming(t *testing.T) {
- C.myfunc()
- C.myfunc_def()
- if v := C.myvar; v != 5 {
- t.Errorf("C.myvar = %d, want 5", v)
- }
- if v := C.myvar_def; v != 5 {
- t.Errorf("C.myvar_def = %d, want 5", v)
- }
- if s := C.GoString(C.mytext); s != "abcdef" {
- t.Errorf("C.mytext = %q, want %q", s, "abcdef")
- }
- if s := C.GoString(C.mytext_def); s != "abcdef" {
- t.Errorf("C.mytext_def = %q, want %q", s, "abcdef")
- }
- if c := C.myenum; c != 1234 {
- t.Errorf("C.myenum = %v, want 1234", c)
- }
- if c := C.myenum_def; c != 1234 {
- t.Errorf("C.myenum_def = %v, want 1234", c)
- }
- {
- const c = C.myenum
- if c != 1234 {
- t.Errorf("C.myenum as const = %v, want 1234", c)
- }
- }
- {
- const c = C.myenum_def
- if c != 1234 {
- t.Errorf("C.myenum as const = %v, want 1234", c)
- }
- }
- if c := C.myint_def; c != 12345 {
- t.Errorf("C.myint_def = %v, want 12345", c)
- }
- {
- const c = C.myint_def
- if c != 12345 {
- t.Errorf("C.myint as const = %v, want 12345", c)
- }
- }
- if c := C.myfloat_def; c != 1.5 {
- t.Errorf("C.myint_def = %v, want 1.5", c)
- }
- {
- const c = C.myfloat_def
- if c != 1.5 {
- t.Errorf("C.myint as const = %v, want 1.5", c)
- }
- }
- if s := C.mystring_def; s != "hello" {
- t.Errorf("C.mystring_def = %q, want %q", s, "hello")
- }
- }
- // issue 6907
- func test6907(t *testing.T) {
- want := "yarn"
- if got := C.GoString(C.Issue6907CopyString(want)); got != want {
- t.Errorf("C.GoString(C.Issue6907CopyString(%q)) == %q, want %q", want, got, want)
- }
- }
- // issue 7560
- func test7560(t *testing.T) {
- // some mingw don't implement __packed__ correctly.
- if C.offset7560() != 1 {
- t.Skip("C compiler did not pack struct")
- }
- // C.misaligned should have x but then a padding field to get to the end of the struct.
- // There should not be a field named 'y'.
- var v C.misaligned
- rt := reflect.TypeOf(&v).Elem()
- if rt.NumField() != 2 || rt.Field(0).Name != "x" || rt.Field(1).Name != "_" {
- t.Errorf("unexpected fields in C.misaligned:\n")
- for i := 0; i < rt.NumField(); i++ {
- t.Logf("%+v\n", rt.Field(i))
- }
- }
- }
- // issue 7786
- func f() {
- var x1 *C.typedef_test7786
- var x2 *C.struct_test7786
- x1 = x2
- x2 = x1
- C.f7786(x1)
- C.f7786(x2)
- C.g7786(x1)
- C.g7786(x2)
- var b1 *C.typedef_body7786
- var b2 *C.struct_body7786
- b1 = b2
- b2 = b1
- C.b7786(b1)
- C.b7786(b2)
- C.c7786(b1)
- C.c7786(b2)
- var u1 *C.typedef_union7786
- var u2 *C.union_union7786
- u1 = u2
- u2 = u1
- C.u7786(u1)
- C.u7786(u2)
- C.v7786(u1)
- C.v7786(u2)
- }
- // issue 8092
- func test8092(t *testing.T) {
- tests := []struct {
- s string
- a, b *C.char
- }{
- {"text", &C.text[0], C.ctext()},
- {"data", &C.data[0], C.cdata()},
- }
- for _, test := range tests {
- if test.a != test.b {
- t.Errorf("%s: pointer mismatch: %v != %v", test.s, test.a, test.b)
- }
- if got := C.GoString(test.a); got != test.s {
- t.Errorf("%s: points at %#v, want %#v", test.s, got, test.s)
- }
- }
- }
- // issues 8368 and 8441
- func issue8368(one *C.struct_one, two *C.struct_two) {
- }
- func issue8441(one *C.one, two *C.two) {
- issue8441(two.x, one.x)
- }
- // issue 8428
- var _ = C.struct_issue8428one{
- b: C.char(0),
- // The trailing rest field is not available in cgo.
- // See issue 11925.
- // rest: [0]C.char{},
- }
- var _ = C.struct_issue8428two{
- p: unsafe.Pointer(nil),
- b: C.char(0),
- rest: [0]C.char{},
- }
- var _ = C.struct_issue8428three{
- w: [1][2][3][0]C.char{},
- x: [2][3][0][1]C.char{},
- y: [3][0][1][2]C.char{},
- z: [0][1][2][3]C.char{},
- }
- // issue 8811
- func test8811(t *testing.T) {
- C.issue8811Execute()
- }
- // issue 9557
- func test9557(t *testing.T) {
- // implicitly dereference a Go variable
- foo := C.issue9557foo
- if v := foo.a; v != 42 {
- t.Fatalf("foo.a expected 42, but got %d", v)
- }
- // explicitly dereference a C variable
- if v := (*C.issue9557foo).a; v != 42 {
- t.Fatalf("(*C.issue9557foo).a expected 42, but is %d", v)
- }
- // implicitly dereference a C variable
- if v := C.issue9557foo.a; v != 42 {
- t.Fatalf("C.issue9557foo.a expected 42, but is %d", v)
- }
- }
- // issue 8331 part 1
- func issue8331a() C.issue8331 {
- return issue8331Var
- }
- // issue 10303
- func test10303(t *testing.T, n int) {
- if runtime.Compiler == "gccgo" {
- t.Skip("gccgo permits C pointers on the stack")
- }
- // Run at a few different stack depths just to avoid an unlucky pass
- // due to variables ending up on different pages.
- if n > 0 {
- test10303(t, n-1)
- }
- if t.Failed() {
- return
- }
- var x, y, z, v, si C.int
- var s C.Struct
- C.setintstar(&x)
- C.setintptr(&y)
- C.setvoidptr(unsafe.Pointer(&v))
- s.P = &si
- C.setstruct(s)
- if uintptr(unsafe.Pointer(&x))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
- t.Error("C int* argument on stack")
- }
- if uintptr(unsafe.Pointer(&y))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
- t.Error("C intptr argument on stack")
- }
- if uintptr(unsafe.Pointer(&v))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
- t.Error("C void* argument on stack")
- }
- if uintptr(unsafe.Pointer(&si))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
- t.Error("C struct field pointer on stack")
- }
- }
- // issue 11925
- func test11925(t *testing.T) {
- if C.sizeof_struct_a11925 != unsafe.Sizeof(C.struct_a11925{}) {
- t.Errorf("size of a changed: C %d, Go %d", C.sizeof_struct_a11925, unsafe.Sizeof(C.struct_a11925{}))
- }
- if C.sizeof_struct_b11925 != unsafe.Sizeof(C.struct_b11925{}) {
- t.Errorf("size of b changed: C %d, Go %d", C.sizeof_struct_b11925, unsafe.Sizeof(C.struct_b11925{}))
- }
- }
- // issue 12030
- func test12030(t *testing.T) {
- buf := (*C.char)(C.malloc(256))
- defer C.free(unsafe.Pointer(buf))
- for _, f := range []float64{1.0, 2.0, 3.14} {
- C.issue12030conv(buf, C.double(f))
- got := C.GoString(buf)
- if want := fmt.Sprintf("d=%g", f); got != want {
- t.Fatalf("C.sprintf failed for %g: %q != %q", f, got, want)
- }
- }
- }
- // issue 13402
- var _ C.complexfloat
- var _ C.complexdouble
- // issue 13930
- // Test that cgo's multiple-value special form for
- // C function calls works in variable declaration statements.
- var _, _ = C.abs(0)
- // issue 14838
- func test14838(t *testing.T) {
- data := []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
- cData := C.CBytes(data)
- defer C.free(cData)
- if C.check_cbytes((*C.char)(cData), C.size_t(len(data))) == 0 {
- t.Fatalf("mismatched data: expected %v, got %v", data, (*(*[10]byte)(unsafe.Pointer(cData)))[:])
- }
- }
- // issue 17065
- var sink C.int
- func test17065(t *testing.T) {
- if runtime.GOOS == "darwin" || runtime.GOOS == "ios" {
- t.Skip("broken on darwin; issue 17065")
- }
- for i := range C.ii {
- sink = C.ii[i]
- }
- }
- // issue 17537
- func test17537(t *testing.T) {
- v := C.S17537{i: 17537}
- if got, want := C.I17537(&v), C.int(17537); got != want {
- t.Errorf("got %d, want %d", got, want)
- }
- p := (*C.char)(C.malloc(1))
- *p = 17
- if got, want := C.F17537(&p), C.int(17); got != want {
- t.Errorf("got %d, want %d", got, want)
- }
- C.F18298(nil)
- var v18298 C.T18298_2
- C.G18298(C.T18298_1(v18298))
- }
- // issue 17723
- func testAPI() {
- var cs *C.char
- cs = C.CString("hello")
- defer C.free(unsafe.Pointer(cs))
- var s string
- s = C.GoString((*C.char)(C.api_hello))
- s = C.GoStringN((*C.char)(C.api_hello), C.int(6))
- var b []byte
- b = C.GoBytes(unsafe.Pointer(C.api_hello), C.int(6))
- _, _ = s, b
- C.cstring_pointer_fun(nil)
- }
- // issue 18126
- func test18126(t *testing.T) {
- p := C.malloc(1)
- _, err := C.Issue18126C(&p)
- C.free(p)
- _ = err
- }
- // issue 18720
- func test18720(t *testing.T) {
- if got, want := C.HELLO_WORLD, "hello\000world"; got != want {
- t.Errorf("C.HELLO_WORLD == %q, expected %q", got, want)
- }
- if got, want := C.VAR1, C.int(5); got != want {
- t.Errorf("C.VAR1 == %v, expected %v", got, want)
- }
- if got, want := *C.ADDR, C.int(5); got != want {
- t.Errorf("*C.ADDR == %v, expected %v", got, want)
- }
- if got, want := C.CALL, C.int(6); got != want {
- t.Errorf("C.CALL == %v, expected %v", got, want)
- }
- if got, want := C.CALL, C.int(7); got != want {
- t.Errorf("C.CALL == %v, expected %v", got, want)
- }
- // Issue 20125.
- if got, want := C.SIZE_OF_FOO, 1; got != want {
- t.Errorf("C.SIZE_OF_FOO == %v, expected %v", got, want)
- }
- }
- // issue 20129
- func test20129(t *testing.T) {
- if C.issue20129 != 0 {
- t.Fatal("test is broken")
- }
- C.issue20129Foo()
- if C.issue20129 != 1 {
- t.Errorf("got %v but expected %v", C.issue20129, 1)
- }
- C.issue20129Bar()
- if C.issue20129 != 2 {
- t.Errorf("got %v but expected %v", C.issue20129, 2)
- }
- }
- // issue 20369
- func test20369(t *testing.T) {
- if C.XUINT64_MAX != math.MaxUint64 {
- t.Fatalf("got %v, want %v", uint64(C.XUINT64_MAX), uint64(math.MaxUint64))
- }
- }
- // issue 21668
- var issue21668_X = C.x21668
- // issue 21708
- func test21708(t *testing.T) {
- if got, want := C.CAST_TO_INT64, -1; got != want {
- t.Errorf("C.CAST_TO_INT64 == %v, expected %v", got, want)
- }
- }
- // issue 21809
- func test21809(t *testing.T) {
- longVar := C.long(3)
- typedefVar := C.MySigned_t(4)
- typedefTypedefVar := C.MySigned2_t(5)
- // all three should be considered identical to `long`
- if ret := C.takes_long(longVar); ret != 9 {
- t.Errorf("got %v but expected %v", ret, 9)
- }
- if ret := C.takes_long(typedefVar); ret != 16 {
- t.Errorf("got %v but expected %v", ret, 16)
- }
- if ret := C.takes_long(typedefTypedefVar); ret != 25 {
- t.Errorf("got %v but expected %v", ret, 25)
- }
- // They should also be identical to the typedef'd type
- if ret := C.takes_typedef(longVar); ret != 9 {
- t.Errorf("got %v but expected %v", ret, 9)
- }
- if ret := C.takes_typedef(typedefVar); ret != 16 {
- t.Errorf("got %v but expected %v", ret, 16)
- }
- if ret := C.takes_typedef(typedefTypedefVar); ret != 25 {
- t.Errorf("got %v but expected %v", ret, 25)
- }
- }
- // issue 22906
- func test22906(t *testing.T) {
- var x1 C.jobject = 0 // Note: 0, not nil. That makes sure we use uintptr for these types.
- _ = x1
- var x2 C.jclass = 0
- _ = x2
- var x3 C.jthrowable = 0
- _ = x3
- var x4 C.jstring = 0
- _ = x4
- var x5 C.jarray = 0
- _ = x5
- var x6 C.jbooleanArray = 0
- _ = x6
- var x7 C.jbyteArray = 0
- _ = x7
- var x8 C.jcharArray = 0
- _ = x8
- var x9 C.jshortArray = 0
- _ = x9
- var x10 C.jintArray = 0
- _ = x10
- var x11 C.jlongArray = 0
- _ = x11
- var x12 C.jfloatArray = 0
- _ = x12
- var x13 C.jdoubleArray = 0
- _ = x13
- var x14 C.jobjectArray = 0
- _ = x14
- var x15 C.jweak = 0
- _ = x15
- }
- // issue 22958
- // Nothing to run, just make sure this compiles.
- var Vissue22958 C.issue22958Type
- func test23356(t *testing.T) {
- if got, want := C.a(), C.int(5); got != want {
- t.Errorf("C.a() == %v, expected %v", got, want)
- }
- if got, want := C.r(), C.int(3); got != want {
- t.Errorf("C.r() == %v, expected %v", got, want)
- }
- }
- // issue 23720
- func Issue23720F() {
- var x C.issue23720A
- C.issue23720F(x)
- }
- // issue 24206
- func test24206(t *testing.T) {
- if runtime.GOOS != "linux" || runtime.GOARCH != "amd64" {
- t.Skipf("skipping on %s/%s", runtime.GOOS, runtime.GOARCH)
- }
- if l := len(C.GoString(C.dangerousString1())); l != 123 {
- t.Errorf("Incorrect string length - got %d, want 123", l)
- }
- if l := len(C.GoString(C.dangerousString2())); l != 4096+123 {
- t.Errorf("Incorrect string length - got %d, want %d", l, 4096+123)
- }
- }
- // issue 25143
- func issue25143sum(ns ...C.int) C.int {
- total := C.int(0)
- for _, n := range ns {
- total += n
- }
- return total
- }
- func test25143(t *testing.T) {
- if got, want := issue25143sum(1, 2, 3), C.int(6); got != want {
- t.Errorf("issue25143sum(1, 2, 3) == %v, expected %v", got, want)
- }
- }
- // issue 26066
- // Wrong type of constant with GCC 8 and newer.
- func test26066(t *testing.T) {
- var i = int64(C.issue26066)
- if i != -1 {
- t.Errorf("got %d, want -1", i)
- }
- }
- // issue 26517
- var a C.TypeOne
- var b C.TypeTwo
- // issue 27660
- // Stress the interaction between the race detector and cgo in an
- // attempt to reproduce the memory corruption described in #27660.
- // The bug was very timing sensitive; at the time of writing this
- // test would only trigger the bug about once out of every five runs.
- func test27660(t *testing.T) {
- ctx, cancel := context.WithCancel(context.Background())
- defer cancel()
- ints := make([]int, 100)
- locks := make([]sync.Mutex, 100)
- // Slowly create threads so that ThreadSanitizer is forced to
- // frequently resize its SyncClocks.
- for i := 0; i < 100; i++ {
- go func() {
- for ctx.Err() == nil {
- // Sleep in C for long enough that it is likely that the runtime
- // will retake this goroutine's currently wired P.
- C.usleep(1000 /* 1ms */)
- runtime.Gosched() // avoid starvation (see #28701)
- }
- }()
- go func() {
- // Trigger lots of synchronization and memory reads/writes to
- // increase the likelihood that the race described in #27660
- // results in corruption of ThreadSanitizer's internal state
- // and thus an assertion failure or segfault.
- i := 0
- for ctx.Err() == nil {
- j := rand.Intn(100)
- locks[j].Lock()
- ints[j]++
- locks[j].Unlock()
- // needed for gccgo, to avoid creation of an
- // unpreemptible "fast path" in this loop. Choice
- // of (1<<24) is somewhat arbitrary.
- if i%(1<<24) == 0 {
- runtime.Gosched()
- }
- i++
- }
- }()
- time.Sleep(time.Millisecond)
- }
- }
- // issue 28540
- func twoargsF() {
- v := []string{}
- C.twoargs1(C.twoargs2(), C.twoargs3(unsafe.Pointer(&v)))
- }
- // issue 28545
- func issue28545G(p **C.char) {
- C.issue28545F(p, -1, (0))
- C.issue28545F(p, 2+3, complex(1, 1))
- C.issue28545F(p, issue28772Constant, issue28772Constant2)
- }
- // issue 28772 part 1 - part 2 in testx.go
- const issue28772Constant = C.issue28772Constant
- // issue 28896
- func offset(i int) uintptr {
- var pi C.innerPacked
- var po C.outerPacked
- var ui C.innerUnpacked
- var uo C.outerUnpacked
- switch i {
- case 0:
- return unsafe.Offsetof(pi.f2)
- case 1:
- return unsafe.Offsetof(po.g2)
- case 2:
- return unsafe.Offsetof(ui.f2)
- case 3:
- return unsafe.Offsetof(uo.g2)
- default:
- panic("can't happen")
- }
- }
- func test28896(t *testing.T) {
- for i := 0; i < 4; i++ {
- c := uintptr(C.offset(C.int(i)))
- g := offset(i)
- if c != g {
- t.Errorf("%d: C: %d != Go %d", i, c, g)
- }
- }
- }
- // issue 29383
- // cgo's /*line*/ comments failed when inserted after '/',
- // because the result looked like a "//" comment.
- // No runtime test; just make sure it compiles.
- func Issue29383(n, size uint) int {
- if ^C.size_t(0)/C.size_t(n) < C.size_t(size) {
- return 0
- }
- return 0
- }
- // issue 29748
- // Error handling a struct initializer that requires pointer checking.
- // Compilation test only, nothing to run.
- var Vissue29748 = C.f29748(&C.S29748{
- nil,
- })
- func Fissue299748() {
- C.f29748(&C.S29748{
- nil,
- })
- }
- // issue 29781
- var issue29781X struct{ X int }
- func issue29781F(...int) int { return 0 }
- func issue29781G() {
- var p *C.char
- C.issue29781F(&p, C.ISSUE29781C+1)
- C.issue29781F(nil, (C.int)(
- 0))
- C.issue29781F(&p, (C.int)(0))
- C.issue29781F(&p, (C.int)(
- 0))
- C.issue29781F(&p, (C.int)(issue29781X.
- X))
- }
- // issue 30065
- func test30065(t *testing.T) {
- var a [256]byte
- b := []byte("a")
- C.memcpy(unsafe.Pointer(&a), unsafe.Pointer(&b[0]), 1)
- if a[0] != 'a' {
- t.Errorf("&a failed: got %c, want %c", a[0], 'a')
- }
- b = []byte("b")
- C.memcpy(unsafe.Pointer(&a[0]), unsafe.Pointer(&b[0]), 1)
- if a[0] != 'b' {
- t.Errorf("&a[0] failed: got %c, want %c", a[0], 'b')
- }
- d := make([]byte, 256)
- b = []byte("c")
- C.memcpy(unsafe.Pointer(&d[0]), unsafe.Pointer(&b[0]), 1)
- if d[0] != 'c' {
- t.Errorf("&d[0] failed: got %c, want %c", d[0], 'c')
- }
- }
- // issue 31093
- // No runtime test; just make sure it compiles.
- func Issue31093() {
- C.issue31093F(C.ushort(0))
- }
- // issue 32579
- func test32579(t *testing.T) {
- var s [1]C.struct_S32579
- C.memset(unsafe.Pointer(&s[0].data[0]), 1, 1)
- if s[0].data[0] != 1 {
- t.Errorf("&s[0].data[0] failed: got %d, want %d", s[0].data[0], 1)
- }
- }
- // issue 37033, check if cgo.Handle works properly
- func testHandle(t *testing.T) {
- ch := make(chan int)
- for i := 0; i < 42; i++ {
- h := cgo.NewHandle(ch)
- go func() {
- C.cFunc37033(C.uintptr_t(h))
- }()
- if v := <-ch; issue37033 != v {
- t.Fatalf("unexpected receiving value: got %d, want %d", v, issue37033)
- }
- h.Delete()
- }
- }
- // issue 38649
- var issue38649 C.netbsd_gid = 42
- // issue 39877
- var issue39877 *C.void = nil
- // issue 40494
- // No runtime test; just make sure it compiles.
- func Issue40494() {
- C.issue40494(C.enum_Enum40494(C.X_40494), (*C.union_Union40494)(nil))
- }
- // Issue 45451.
- func test45451(t *testing.T) {
- var u *C.issue45451
- typ := reflect.ValueOf(u).Type().Elem()
- // The type is undefined in C so allocating it should panic.
- defer func() {
- if r := recover(); r == nil {
- t.Error("expected panic")
- }
- }()
- _ = reflect.New(typ)
- t.Errorf("reflect.New(%v) should have panicked", typ)
- }
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