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Re: [PATCH] PR c++/69462: Provide FLT_EVAL_METHOD and DECIMAL_DIG in float.h.
- From: Jonathan Wakely <jwakely at redhat dot com>
- To: vogt at linux dot vnet dot ibm dot com, gcc-patches at gcc dot gnu dot org, Andreas Krebbel <krebbel at linux dot vnet dot ibm dot com>
- Date: Thu, 28 Jan 2016 13:32:18 +0000
- Subject: Re: [PATCH] PR c++/69462: Provide FLT_EVAL_METHOD and DECIMAL_DIG in float.h.
- Authentication-results: sourceware.org; auth=none
- References: <20160128124012 dot GA19249 at linux dot vnet dot ibm dot com>
On 28/01/16 13:40 +0100, Dominik Vogt wrote:
The attached patch (written by Jonathan, not me) makes
FLT_EVAL_METHOD and DECIMAL_DIG available in C++-11 as they should
be.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69462
Can this be committed (should it wait for stage1)?
I've just noticed we should also do the following, although this can
definitely wait for stage 1 as it works fine as is (unlike Dominik's
<float.h> case which is a conformance bug).
--- a/gcc/ginclude/stdarg.h
+++ b/gcc/ginclude/stdarg.h
@@ -47,7 +47,7 @@ typedef __builtin_va_list __gnuc_va_list;
#define va_start(v,l) __builtin_va_start(v,l)
#define va_end(v) __builtin_va_end(v)
#define va_arg(v,l) __builtin_va_arg(v,l)
-#if !defined(__STRICT_ANSI__) || __STDC_VERSION__ + 0 >= 199900L || defined(__GXX_EXPERIMENTAL_CXX0X__)
+#if !defined(__STRICT_ANSI__) || __STDC_VERSION__ + 0 >= 199900L || __cplusplus + 0 >= 201103L
#define va_copy(d,s) __builtin_va_copy(d,s)
#endif
#define __va_copy(d,s) __builtin_va_copy(d,s)