diff options
Diffstat (limited to 'libsanitizer/ubsan/ubsan_value.cc')
| -rw-r--r-- | libsanitizer/ubsan/ubsan_value.cc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/libsanitizer/ubsan/ubsan_value.cc b/libsanitizer/ubsan/ubsan_value.cc index e2f664d3b24..e327f6ffc2e 100644 --- a/libsanitizer/ubsan/ubsan_value.cc +++ b/libsanitizer/ubsan/ubsan_value.cc @@ -10,6 +10,8 @@ // //===----------------------------------------------------------------------===// +#include "ubsan_platform.h" +#if CAN_SANITIZE_UB #include "ubsan_value.h" #include "sanitizer_common/sanitizer_common.h" #include "sanitizer_common/sanitizer_libc.h" @@ -79,7 +81,14 @@ FloatMax Value::getFloatValue() const { #endif case 32: { float Value; - internal_memcpy(&Value, &Val, 4); +#if defined(__BIG_ENDIAN__) + // For big endian the float value is in the last 4 bytes. + // On some targets we may only have 4 bytes so we count backwards from + // the end of Val to account for both the 32-bit and 64-bit cases. + internal_memcpy(&Value, ((const char*)(&Val + 1)) - 4, 4); +#else + internal_memcpy(&Value, &Val, 4); +#endif return Value; } case 64: { @@ -98,3 +107,5 @@ FloatMax Value::getFloatValue() const { } UNREACHABLE("unexpected floating point bit width"); } + +#endif // CAN_SANITIZE_UB |