[libFuzzer] Fix Alarm callback in fuchsia.
This patch adds an #if macro to skip the InFuzzingThread() comparison
for fuchsia, similar to what it is done for Windows and NetBSD.
In fuchsia, the alarm callback runs in a separate thread[0], making it fail
the comparison InFuzzingThread(), breaking the -timeout flag.
[0]:
https://github.com/llvm/llvm-project/blob/master/compiler-rt/lib/fuzzer/FuzzerUtilFuchsia.cpp#L323
Author: charco (aka Marco Vanotti)
Differential Revision: https://reviews.llvm.org/D68166
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@374228 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/fuzzer/FuzzerLoop.cpp b/lib/fuzzer/FuzzerLoop.cpp
index df533e8..451a4c1 100644
--- a/lib/fuzzer/FuzzerLoop.cpp
+++ b/lib/fuzzer/FuzzerLoop.cpp
@@ -273,9 +273,9 @@
NO_SANITIZE_MEMORY
void Fuzzer::AlarmCallback() {
assert(Options.UnitTimeoutSec > 0);
- // In Windows Alarm callback is executed by a different thread.
+ // In Windows and Fuchsia, Alarm callback is executed by a different thread.
// NetBSD's current behavior needs this change too.
-#if !LIBFUZZER_WINDOWS && !LIBFUZZER_NETBSD
+#if !LIBFUZZER_WINDOWS && !LIBFUZZER_NETBSD && !LIBFUZZER_FUCHSIA
if (!InFuzzingThread())
return;
#endif
