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CrashRecovery/Darwin: On Darwin, raise sends a signal to the main thread instead

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of the current thread. This has the unfortunate effect that assert() and abort()
will end up bypassing our crash recovery attempts. We work around this for
anything in the same linkage unit by just defining our own versions of the
assert handler and abort.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111583 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2010-08-19 23:45:39 +00:00
parent 7c73b8b180
commit b08ceb8135
1 changed files with 34 additions and 0 deletions
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34
lib/System/Unix/Signals.inc
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@ -253,3 +253,37 @@ void llvm::sys::PrintStackTraceOnErrorSignal() {
AddSignalHandler(PrintStackTrace, 0);
}
/***/
// On Darwin, raise sends a signal to the main thread instead of the current
// thread. This has the unfortunate effect that assert() and abort() will end up
// bypassing our crash recovery attempts. We work around this for anything in
// the same linkage unit by just defining our own versions of the assert handler
// and abort.
#ifdef __APPLE__
void __assert_rtn(const char *func,
const char *file,
int line,
const char *expr) {
if (func)
fprintf(stderr, "Assertion failed: (%s), function %s, file %s, line %d.\n",
expr, func, file, line);
else
fprintf(stderr, "Assertion failed: (%s), file %s, line %d.\n",
expr, file, line);
abort();
}
#include <signal.h>
#include <pthread.h>
void abort() {
pthread_kill(pthread_self(), SIGABRT);
usleep(1000);
__builtin_trap();
}
#endif