[trafficserver] branch master updated: TS-5034: Add a --enable-tsan configure option

[bc...@apache.org]

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bcall pushed a commit to branch master
in repository https://git-dual.apache.org/repos/asf/trafficserver.git

The following commit(s) were added to refs/heads/master by this push:
       new  b7e0f82   TS-5034: Add a --enable-tsan configure option
b7e0f82 is described below

commit b7e0f8285b2994175960bab753af8f54c4ac9a62
Author: Bryan Call <bc...@apache.org>
AuthorDate: Thu Nov 3 15:29:12 2016 -0700

    TS-5034: Add a --enable-tsan configure option
---
 configure.ac       | 18 ++++++++++++++++++
 proxy/CoreUtils.cc |  2 +-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index ae18989..d9c51aa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -197,6 +197,15 @@ AC_ARG_ENABLE([asan],
 )
 AC_MSG_RESULT([$enable_asan])
 
+# Enable TSAN for the builds
+AC_MSG_CHECKING([whether to enable tsan])
+AC_ARG_ENABLE([tsan],
+  [AS_HELP_STRING([--enable-tsan],[turn on Thread Sanitizer])],
+  [],
+  [enable_tsan=no]
+)
+AC_MSG_RESULT([$enable_tsan])
+
 #
 # Fast SDK APIs, this disables the parameter checks (assert)
 # on all APIs.
@@ -913,10 +922,19 @@ fi
 
 # Flags for ASAN
 if test "x${enable_asan}" = "xyes"; then
+  if test "x${enable_tsan}" = "xyes"; then
+    AC_ERROR([Cannot have ASAN and TSAN options at the same time, pick one])
+  fi
   TS_ADDTO(CFLAGS, [-fno-omit-frame-pointer -fsanitize=address])
   TS_ADDTO(CXXFLAGS, [-fno-omit-frame-pointer -fsanitize=address])
 fi
 
+# Flags for TSAN
+if test "x${enable_tsan}" = "xyes"; then
+  TS_ADDTO(CFLAGS, [-fsanitize=thread])
+  TS_ADDTO(CXXFLAGS, [-fsanitize=thread])
+fi
+
 # Checks for pointer size.
 # TODO: Later this is irrelevant, and we should just bail on 32-bit platforms always
 AC_CHECK_SIZEOF([void*])
diff --git a/proxy/CoreUtils.cc b/proxy/CoreUtils.cc
index 02bfcee..95bd9e4 100644
--- a/proxy/CoreUtils.cc
+++ b/proxy/CoreUtils.cc
@@ -390,7 +390,7 @@ CoreUtils::test_HttpSM_from_tunnel(void *arg)
   char *tmp        = (char *)arg;
   intptr_t offset  = (intptr_t) & (((HttpTunnel *)nullptr)->sm);
   HttpSM **hsm_ptr = (HttpSM **)(tmp + offset);
-  HttpSM *hsm_test;
+  HttpSM *hsm_test = nullptr;
 
   if (read_from_core((intptr_t)hsm_ptr, sizeof(HttpSM *), (char *)&hsm_test) == 0) {
     return;

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