[compiler-rt] r186579 - tsan: treat SIGSYS as synchronous signal

[Dmitry Vyukov]

Author: dvyukov
Date: Thu Jul 18 08:14:11 2013
New Revision: 186579

URL: http://llvm.org/viewvc/llvm-project?rev=186579&view=rev
Log:
tsan: treat SIGSYS as synchronous signal
It is required for chromium sandboxing code.
>From the description it seems to be indeed synchronous -- called back on syscall with incorrect arguments,
but seems to be unused in practice. So this should be fine.


Modified:
    compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc

Modified: compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc?rev=186579&r1=186578&r2=186579&view=diff
==============================================================================
--- compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc (original)
+++ compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc Thu Jul 18 08:14:11 2013
@@ -77,6 +77,7 @@ const int SIGFPE = 8;
 const int SIGSEGV = 11;
 const int SIGPIPE = 13;
 const int SIGBUS = 7;
+const int SIGSYS = 31;
 void *const MAP_FAILED = (void*)-1;
 const int PTHREAD_BARRIER_SERIAL_THREAD = -1;
 const int MAP_FIXED = 0x10;
@@ -1608,7 +1609,7 @@ void ALWAYS_INLINE rtl_generic_sighandle
   SignalContext *sctx = SigCtx(thr);
   // Don't mess with synchronous signals.
   if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL ||
-      sig == SIGABRT || sig == SIGFPE || sig == SIGPIPE ||
+      sig == SIGABRT || sig == SIGFPE || sig == SIGPIPE || sig == SIGSYS ||
       // If we are sending signal to ourselves, we must process it now.
       (sctx && sig == sctx->int_signal_send) ||
       // If we are in blocking function, we can safely process it now