Make use of '#pragma clang diagnostic' only with __clang__.

Otherwise one gets the following warning with GCC:
warning: ignoring ‘#pragma clang diagnostic’ [-Wunknown-pragmas]

Differential Revision: https://reviews.llvm.org/D148695

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h
index 18940c5..bf3c2c2 100644 (file)
--- a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h
@@ -84,10 +84,14 @@ class MemoryMappingLayout : public MemoryMappingLayoutBase {
 // This destructor cannot be virtual, as it would cause an operator new() linking
 // failures in hwasan test cases. However non-virtual destructors emit warnings
 // in macOS build, hence disabling those
+#ifdef __clang__
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wnon-virtual-dtor"
+#endif
   ~MemoryMappingLayout();
+#ifdef __clang__
 #pragma clang diagnostic pop
+#endif
 
   virtual bool Next(MemoryMappedSegment *segment) override;
   virtual bool Error() const override;