diff options
Diffstat (limited to 'Source/kwsys/testProcess.c')
| -rw-r--r-- | Source/kwsys/testProcess.c | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/Source/kwsys/testProcess.c b/Source/kwsys/testProcess.c index 877002a14..6d5eb71fd 100644 --- a/Source/kwsys/testProcess.c +++ b/Source/kwsys/testProcess.c @@ -32,7 +32,7 @@ # pragma warn -8060 /* possibly incorrect assignment */ #endif -#if defined(__BEOS__) && !defined(__ZETA__) && !defined(__HAIKU__) +#if defined(__BEOS__) && !defined(__ZETA__) /* BeOS 5 doesn't have usleep(), but it has snooze(), which is identical. */ # include <be/kernel/OS.h> static inline void testProcess_usleep(unsigned int msec) @@ -47,7 +47,7 @@ int runChild(const char* cmd[], int state, int exception, int value, int share, int output, int delay, double timeout, int poll, int repeat, int disown); -int test1(int argc, const char* argv[]) +static int test1(int argc, const char* argv[]) { (void)argc; (void)argv; fprintf(stdout, "Output on stdout from test returning 0.\n"); @@ -55,7 +55,7 @@ int test1(int argc, const char* argv[]) return 0; } -int test2(int argc, const char* argv[]) +static int test2(int argc, const char* argv[]) { (void)argc; (void)argv; fprintf(stdout, "Output on stdout from test returning 123.\n"); @@ -63,7 +63,7 @@ int test2(int argc, const char* argv[]) return 123; } -int test3(int argc, const char* argv[]) +static int test3(int argc, const char* argv[]) { (void)argc; (void)argv; fprintf(stdout, "Output before sleep on stdout from timeout test.\n"); @@ -80,8 +80,16 @@ int test3(int argc, const char* argv[]) return 0; } -int test4(int argc, const char* argv[]) +static int test4(int argc, const char* argv[]) { + /* Prepare a pointer to an invalid address. Don't use null, because + dereferencing null is undefined behaviour and compilers are free to + do whatever they want. ex: Clang will warn at compile time, or even + optimize away the write. We hope to 'outsmart' them by using + 'volatile' and a slightly larger address, based on a runtime value. */ + volatile int* invalidAddress = 0; + invalidAddress += argc?1:2; + #if defined(_WIN32) /* Avoid error diagnostic popups since we are crashing on purpose. */ SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX); @@ -94,17 +102,14 @@ int test4(int argc, const char* argv[]) fprintf(stderr, "Output before crash on stderr from crash test.\n"); fflush(stdout); fflush(stderr); -#if defined(__clang__) - *(int*)1 = 0; /* Clang warns about 0-ptr; undefined behavior. */ -#else - *(int*)0 = 0; -#endif + /* Provoke deliberate crash by writing to the invalid address. */ + *invalidAddress = 0; fprintf(stdout, "Output after crash on stdout from crash test.\n"); fprintf(stderr, "Output after crash on stderr from crash test.\n"); return 0; } -int test5(int argc, const char* argv[]) +static int test5(int argc, const char* argv[]) { int r; const char* cmd[4]; @@ -127,7 +132,7 @@ int test5(int argc, const char* argv[]) } #define TEST6_SIZE (4096*2) -void test6(int argc, const char* argv[]) +static void test6(int argc, const char* argv[]) { int i; char runaway[TEST6_SIZE+1]; @@ -151,7 +156,7 @@ void test6(int argc, const char* argv[]) delaying 1/10th of a second should ever have to poll. */ #define MINPOLL 5 #define MAXPOLL 20 -int test7(int argc, const char* argv[]) +static int test7(int argc, const char* argv[]) { (void)argc; (void)argv; fprintf(stdout, "Output on stdout before sleep.\n"); @@ -171,7 +176,7 @@ int test7(int argc, const char* argv[]) return 0; } -int test8(int argc, const char* argv[]) +static int test8(int argc, const char* argv[]) { /* Create a disowned grandchild to test handling of processes that exit before their children. */ @@ -195,7 +200,7 @@ int test8(int argc, const char* argv[]) return r; } -int test8_grandchild(int argc, const char* argv[]) +static int test8_grandchild(int argc, const char* argv[]) { (void)argc; (void)argv; fprintf(stdout, "Output on stdout from grandchild before sleep.\n"); @@ -216,7 +221,7 @@ int test8_grandchild(int argc, const char* argv[]) return 0; } -int runChild2(kwsysProcess* kp, +static int runChild2(kwsysProcess* kp, const char* cmd[], int state, int exception, int value, int share, int output, int delay, double timeout, int poll, int disown) @@ -500,7 +505,7 @@ int main(int argc, const char* argv[]) fprintf(stderr, "Output on stderr after test %d.\n", n); fflush(stdout); fflush(stderr); -#if _WIN32 +#if defined(_WIN32) if(argv0) { free(argv0); } #endif return r; |