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Add 'fsanitize=address,undefined' to tests and flatc targets (#5009)

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* Add '-fsanitize' optional flags to flattests and flatc targets

Control: -DFLATBUFFERS_CODE_SANITIZE=(ON | OFF | "=memory,undefined")
Travis-CI: building with -DFLATBUFFERS_CODE_SANITIZE=ON

* Fix -pie flag

* Cleanup
This commit is contained in:
Vladimir Glavnyy
2018-10-30 01:29:05 +07:00
committed by Wouter van Oortmerssen
parent bd20a60d6a
commit 0fb1d44bc4
4 changed files with 70 additions and 7 deletions
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17
include/flatbuffers/base.h
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@@ -195,6 +195,15 @@
#endif
#endif // !FLATBUFFERS_HAS_NEW_STRTOD
// Suppress sanitizer directives.
#if defined(__clang__)
#define __no_sanitize_undefined__(reason) __attribute__((no_sanitize("undefined")))
#elif defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 408)
#define __no_sanitize_undefined__(reason) __attribute__((no_sanitize_undefined))
#else
#define __no_sanitize_undefined__(reason)
#endif
/// @endcond
/// @file
@@ -277,11 +286,15 @@ template<typename T> T EndianScalar(T t) {
#endif
}
template<typename T> T ReadScalar(const void *p) {
template<typename T>
__no_sanitize_undefined__("C++ aliasing type rules, see std::bit_cast<>")
T ReadScalar(const void *p) {
return EndianScalar(*reinterpret_cast<const T *>(p));
}
template<typename T> void WriteScalar(void *p, T t) {
template<typename T>
__no_sanitize_undefined__("C++ aliasing type rules, see std::bit_cast<>")
void WriteScalar(void *p, T t) {
*reinterpret_cast<T *>(p) = EndianScalar(t);
}