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[hwasan] Don't handle signals on Android. 

Sigtrap is used for error reporting, but all other signals are better
left for the platform.

In particular, sanitizer signal handlers do not dump registers or
memory which makes debugging harder for no good reason.

llvm-svn: 341500
This commit is contained in:
Evgeniy Stepanov 2018-09-05 22:46:19 +00:00
parent 5159bbad8b
commit 6afce6a438
1 changed files with 11 additions and 0 deletions
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11
compiler-rt/lib/hwasan/hwasan.cc
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@ -87,7 +87,18 @@ static void InitializeFlags() {
cf.check_printf = false;
cf.intercept_tls_get_addr = true;
cf.exitcode = 99;
// Sigtrap is used in error reporting.
cf.handle_sigtrap = kHandleSignalExclusive;
#if SANITIZER_ANDROID
// Let platform handle other signals. It is better at reporting them then we
// are.
cf.handle_segv = kHandleSignalNo;
cf.handle_sigbus = kHandleSignalNo;
cf.handle_abort = kHandleSignalNo;
cf.handle_sigill = kHandleSignalNo;
cf.handle_sigfpe = kHandleSignalNo;
#endif
OverrideCommonFlags(cf);
}