From 7f49b7c0200e745c5f0d3e9245a6e4590bd57b1d Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@redhat.com>
Date: Tue, 28 Oct 2014 13:26:24 -0700
Subject: longlong.h: Disable alpha umul_ppmm for old g++

Causes "unexpected AST of kind MULT_HIGHPART" error with bootstrap from gcc 4.8.
---
 stdlib/longlong.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'stdlib')

diff --git a/stdlib/longlong.h b/stdlib/longlong.h
index 650ef3173f..1bc3e659d0 100644
--- a/stdlib/longlong.h
+++ b/stdlib/longlong.h
@@ -139,6 +139,9 @@ extern const UQItype __clz_tab[256] attribute_hidden;
 #endif /* __aarch64__ */
 
 #if defined (__alpha) && W_TYPE_SIZE == 64
+/* There is a bug in g++ before version 5 that
+   errors on __builtin_alpha_umulh.  */
+#if !defined(__cplusplus) || __GNUC__ >= 5
 #define umul_ppmm(ph, pl, m0, m1) \
   do {									\
     UDItype __m0 = (m0), __m1 = (m1);					\
@@ -146,6 +149,7 @@ extern const UQItype __clz_tab[256] attribute_hidden;
     (pl) = __m0 * __m1;							\
   } while (0)
 #define UMUL_TIME 46
+#endif /* !c++ */
 #ifndef LONGLONG_STANDALONE
 #define udiv_qrnnd(q, r, n1, n0, d) \
   do { UDItype __r;							\
-- 
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