From: Jaroslav Kysela <perex@perex.cz>
Date: Mon, 15 Jan 2018 17:09:40 +0000 (+0100)
Subject: configure: add cclang_threadsan - gcc's cpp bails out for __has_feature()
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6143ce00552693035fa89d7602cdd659a1f3ff18;p=thirdparty%2Ftvheadend.git

configure: add cclang_threadsan - gcc's cpp bails out for __has_feature()
---

diff --git a/configure b/configure
index 58c951c8c..8ba29299c 100755
--- a/configure
+++ b/configure
@@ -76,6 +76,7 @@ OPTIONS=(
   "libsystemd_daemon:no"
   "bintray_cache:yes"
   "ddci:no"
+  "cclang_threadsan:no"
 )
 
 #
@@ -298,6 +299,13 @@ int test(void)
 }
 '
 
+check_cc_snippet cclang_threadsan '
+int test(void){
+#if __has_feature(thread_sanitizer)
+  return 0;
+#endif
+}'
+
 #
 # Python
 #
diff --git a/src/tvheadend.h b/src/tvheadend.h
index e84a62f0a..5ed6f6685 100644
--- a/src/tvheadend.h
+++ b/src/tvheadend.h
@@ -832,7 +832,7 @@ void tvh_qsort_r(void *base, size_t nmemb, size_t size, int (*compar)(const void
 #define TVH_TITLE_LEN 256
 
 /* sanitizer helpers */
-#if __has_feature(thread_sanitizer)
+#if ENABLE_CCLANG_THREADSAN
 void *blacklisted_memcpy(void *dest, const void *src, size_t n);
 int blacklisted_close(int fildes);
 #else
diff --git a/src/wrappers.c b/src/wrappers.c
index 02a58be85..1b1671f68 100644
--- a/src/wrappers.c
+++ b/src/wrappers.c
@@ -654,7 +654,7 @@ int regex_match_substring_length(tvh_regex_t *regex, unsigned number)
 /*
  * Sanitizer helpers to avoid false positives
  */
-#if __has_feature(thread_sanitizer)
+#if ENABLE_CCLANG_THREADSAN
 void *blacklisted_memcpy(void *dest, const void *src, size_t n)
   __attribute__((no_sanitize("thread")))
 {