folly: avoid false-positive ASAN-abort from SignalHandlerTest

Summary:
Without this change, the sig-handling test's deliberate
invalid access would trigger an ASAN-abort, which differed
from the expected SEGV.  Skip this test when ASAN is enabled.
* folly/experimental/symbolizer/test/SignalHandlerTest.cpp: Include
CPortability.h for definion of FOLLY_SANITIZE_ADDRESS.
(SignalHandler) [FOLLY_SANITIZE_ADDRESS]: Provide a different
regexp to match the first line of output from an ASAN-enabled binary.

Test Plan:
fbconfig --sanitize=address --platform-all=gcc-4.8.1-glibc-2.17 \
folly/experimental/symbolizer/test:signal_handler_test \
&& fbmake --fast runtests \
&& fbmake --fast runtests_opt

Sample output, before this change: https://phabricator.fb.com/P5428975
(search down to first AddressSanitizer abort.
With this change, expect that test to pass.

Reviewed By: lucian@fb.com

FB internal diff: D1164768

diff --git a/folly/experimental/symbolizer/test/SignalHandlerTest.cpp b/folly/experimental/symbolizer/test/SignalHandlerTest.cpp
index e284f16e54db1d7028b25d1d3b3b1da947b260c2..cc1a19a7d456786931991da554e9aee1372052cb 100644 (file)
--- a/folly/experimental/symbolizer/test/SignalHandlerTest.cpp
+++ b/folly/experimental/symbolizer/test/SignalHandlerTest.cpp
@@ -21,6 +21,7 @@
 
 #include "folly/FileUtil.h"
 #include "folly/Range.h"
+#include "folly/CPortability.h"
 
 namespace folly { namespace symbolizer { namespace test {
 
@@ -49,6 +50,11 @@ TEST(SignalHandler, Simple) {
 
   EXPECT_DEATH(
       failHard(),
+#ifdef FOLLY_SANITIZE_ADDRESS
+      // Testing an ASAN-enabled binary evokes a different diagnostic.
+      // Use a regexp that requires only the first line of that output:
+      "^ASAN:SIGSEGV\n.*"
+#else
       "^\\*\\*\\* Aborted at [0-9]+ \\(Unix time, try 'date -d @[0-9]+'\\) "
       "\\*\\*\\*\n"
       "\\*\\*\\* Signal 11 \\(SIGSEGV\\) \\(0x2a\\) received by PID [0-9]+ "
@@ -61,6 +67,7 @@ TEST(SignalHandler, Simple) {
       ".*\n"
       "Callback1\n"
       "Callback2\n"
+#endif
       );
 }