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include/flatbuffers/base.h: fix no_sanitize issue with old clang (#5610) 

Older clang versions raise:
```
./flatbuffers/base.h:365:1: error: unknown attribute 'no_sanitize' ignored [-Werror,-Wattributes]
__supress_ubsan__("alignment")
^
./flatbuffers/base.h:246:50: note: expanded from macro '__supress_ubsan__'
  #define __supress_ubsan__(type) __attribute__((no_sanitize(type)))
                                                 ^
```

Comparing https://releases.llvm.org/3.6.0/tools/clang/docs/AttributeReference.html
with https://releases.llvm.org/3.7.0/tools/clang/docs/AttributeReference.html
shows that __attribute__((no_sanitize(type))) is available since 3.7.0
This commit is contained in:
Even Rouault 2019-11-04 23:58:51 +01:00 committed by Wouter van Oortmerssen
parent 46ae3f80a6
commit 44b2ab087c
1 changed files with 1 additions and 1 deletions
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2
include/flatbuffers/base.h
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@ -242,7 +242,7 @@ namespace flatbuffers {
// Suppress Undefined Behavior Sanitizer (recoverable only). Usage:
// - __supress_ubsan__("undefined")
// - __supress_ubsan__("signed-integer-overflow")
#if defined(__clang__)
#if defined(__clang__) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >=7))
#define __supress_ubsan__(type) __attribute__((no_sanitize(type)))
#elif defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 409)
#define __supress_ubsan__(type) __attribute__((no_sanitize_undefined))