[PATCH 5/7] New local GCC patch for CAN_SANITIZE_UB ifdef.

[marxin]

libsanitizer/ChangeLog:

2018-10-24  Martin Liska  <mli...@suse.cz>

        * ubsan/ubsan_platform.h: Add ifndef as we define it with
        -DCAN_SANITIZE_UB CFLAGS.
---
 libsanitizer/ubsan/ubsan_platform.h | 2 ++
 1 file changed, 2 insertions(+)


diff --git a/libsanitizer/ubsan/ubsan_platform.h b/libsanitizer/ubsan/ubsan_platform.h
index 75d06646ce8..67c4e079724 100644
--- a/libsanitizer/ubsan/ubsan_platform.h
+++ b/libsanitizer/ubsan/ubsan_platform.h
@@ -11,6 +11,7 @@
 #ifndef UBSAN_PLATFORM_H
 #define UBSAN_PLATFORM_H
 
+#ifndef CAN_SANITIZE_UB
 // Other platforms should be easy to add, and probably work as-is.
 #if defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__) ||        \
     defined(__NetBSD__) || defined(__OpenBSD__) || \
@@ -20,5 +21,6 @@
 #else
 # define CAN_SANITIZE_UB 0
 #endif
+#endif //CAN_SANITIZE_UB
 
 #endif