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Improve our error handling on windows.

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* Remove LLVM_ENABLE_CRT_REPORT. LLVM_DISABLE_CRASH_REPORT made it redundant.
* set Return to 1, so that we get a stack trace on failure.
* don't call _exit, so that we get a negative exit value and "not --crash"
  correctly differentiates crashes and regular errors.

This is a bit experimental since the documentation on this interface is sparse.
It doesn't bring up a dialog on my windows setup, but feel free to revert
if it causes problem for your setup (and let me know what it is so that I
can try to fix this patch).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187206 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2013-07-26 14:55:36 +00:00
parent 16a0de5b4a
commit 71b1c76cdf
1 changed files with 1 additions and 38 deletions
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39
lib/Support/Windows/Signals.inc
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@ -193,34 +193,6 @@ static int AvoidMessageBoxHook(int ReportType, char *Message, int *Return) {
return TRUE;
}
/// CRTReportHook - Function called on a CRT debugging event.
static int CRTReportHook(int ReportType, char *Message, int *Return) {
// Don't cause a DebugBreak() on return.
if (Return)
*Return = 0;
switch (ReportType) {
default:
case _CRT_ASSERT:
fprintf(stderr, "CRT assert: %s\n", Message);
// FIXME: Is there a way to just crash? Perhaps throw to the unhandled
// exception code? Perhaps SetErrorMode() handles this.
_exit(3);
break;
case _CRT_ERROR:
fprintf(stderr, "CRT error: %s\n", Message);
// FIXME: Is there a way to just crash? Perhaps throw to the unhandled
// exception code? Perhaps SetErrorMode() handles this.
_exit(3);
break;
case _CRT_WARN:
fprintf(stderr, "CRT warn: %s\n", Message);
break;
}
// Don't call _CrtDbgReport.
return TRUE;
}
#endif
static void RegisterHandler() {
@ -253,19 +225,10 @@ static void RegisterHandler() {
OldFilter = SetUnhandledExceptionFilter(LLVMUnhandledExceptionFilter);
SetConsoleCtrlHandler(LLVMConsoleCtrlHandler, TRUE);
#ifdef _MSC_VER
const char *EnableMsgbox = getenv("LLVM_ENABLE_CRT_REPORT");
if (!EnableMsgbox || strcmp("0", EnableMsgbox) == 0) {
// Setting a report hook overrides the default behavior of popping an "abort,
// retry, or ignore" dialog.
_CrtSetReportHook(AvoidMessageBoxHook);
}
#endif
// Environment variable to disable any kind of crash dialog.
if (getenv("LLVM_DISABLE_CRASH_REPORT")) {
#ifdef _MSC_VER
_CrtSetReportHook(CRTReportHook);
_CrtSetReportHook(AvoidMessageBoxHook);
#endif
SetErrorMode(SEM_FAILCRITICALERRORS |
SEM_NOGPFAULTERRORBOX |