diff -up chromium-83.0.4103.97/third_party/skia/include/private/SkFloatingPoint.h.gcc-float-divide-by-zero chromium-83.0.4103.97/third_party/skia/include/private/SkFloatingPoint.h
--- chromium-83.0.4103.97/third_party/skia/include/private/SkFloatingPoint.h.gcc-float-divide-by-zero	2020-06-15 11:09:01.218290365 -0400
+++ chromium-83.0.4103.97/third_party/skia/include/private/SkFloatingPoint.h	2020-06-15 11:14:15.900470624 -0400
@@ -159,7 +159,15 @@ static inline int64_t sk_float_saturate2
 // Cast double to float, ignoring any warning about too-large finite values being cast to float.
 // Clang thinks this is undefined, but it's actually implementation defined to return either
 // the largest float or infinity (one of the two bracketing representable floats).  Good enough!
+#if defined(__GNUC__) && __GNUC__ >= 8
+__attribute__((no_sanitize("float-cast-overflow")))
+#else
+# if defined(__GNUC__)
+__attribute__((no_sanitize_undefined))
+# else
 [[clang::no_sanitize("float-cast-overflow")]]
+# endif
+#endif
 static inline float sk_double_to_float(double x) {
     return static_cast<float>(x);
 }
@@ -226,12 +234,28 @@ static inline float sk_float_rsqrt(float
 // IEEE defines how float divide behaves for non-finite values and zero-denoms, but C does not
 // so we have a helper that suppresses the possible undefined-behavior warnings.
 
+#if defined(__GNUC__) && __GNUC__ >= 8
+__attribute__((no_sanitize("float-divide-by-zero")))
+#else
+# if defined(__GNUC__)
+__attribute__((no_sanitize_undefined))
+# else
 [[clang::no_sanitize("float-divide-by-zero")]]
+# endif
+#endif
 static inline float sk_ieee_float_divide(float numer, float denom) {
     return numer / denom;
 }
 
+#if defined(__GNUC__) && __GNUC__ >= 8
+__attribute__((no_sanitize("float-divide-by-zero")))
+#else
+# if defined(__GNUC__)
+__attribute__((no_sanitize_undefined))
+# else
 [[clang::no_sanitize("float-divide-by-zero")]]
+# endif
+#endif
 static inline double sk_ieee_double_divide(double numer, double denom) {
     return numer / denom;
 }