Workaround for compiler bug (GCC 4.8 and 4.9 when targetting 32-bit x86).

[BearSSL] / src / inner.h

diff --git a/src/inner.h b/src/inner.h
index 33901ab..3830c7c 100644 (file)
--- a/src/inner.h
+++ b/src/inner.h
@@ -157,10 +157,12 @@
  * GCC versions from 4.4 to 4.8 (inclusive) must use a special #pragma
  * to activate extra opcodes before including the relevant intrinsic
  * headers. But these don't work with Clang (which does not need them
  * GCC versions from 4.4 to 4.8 (inclusive) must use a special #pragma
  * to activate extra opcodes before including the relevant intrinsic
  * headers. But these don't work with Clang (which does not need them

- * either).
+ * either). We also need that #pragma for GCC 4.9 in order to work
+ * around a compiler bug (it tends to blow up on ghash_pclmul code
+ * otherwise).

  */
 #if BR_AES_X86NI_GCC && !defined BR_AES_X86NI_GCC_OLD
  */
 #if BR_AES_X86NI_GCC && !defined BR_AES_X86NI_GCC_OLD

-#if __GNUC__ == 4 && __GNUC_MINOR__ >= 4 && __GNUC_MINOR__ <= 8 && !__clang__
+#if __GNUC__ == 4 && __GNUC_MINOR__ >= 4 && __GNUC_MINOR__ <= 9 && !__clang__

 #define BR_AES_X86NI_GCC_OLD   1
 #endif
 #endif
 #define BR_AES_X86NI_GCC_OLD   1
 #endif
 #endif


@@ -236,7 +238,7 @@
 #define BR_BE_UNALIGNED   1
 #elif BR_POWER8_LE
 #define BR_LE_UNALIGNED   1
 #define BR_BE_UNALIGNED   1
 #elif BR_POWER8_LE
 #define BR_LE_UNALIGNED   1

-#elif (__powerpc__ || __powerpc64__ || _M_PPC || _ARCH_PPC || _ARCH_PPC64) \\
+#elif (__powerpc__ || __powerpc64__ || _M_PPC || _ARCH_PPC || _ARCH_PPC64) \

        && __BIG_ENDIAN__
 #define BR_BE_UNALIGNED   1
 #endif
        && __BIG_ENDIAN__
 #define BR_BE_UNALIGNED   1
 #endif