------- Comment #3 from roger at eyesopen dot com 2006-02-08 04:04 -------
Subject: Re: Configure tests for pthread.h sometimes
need to use -pthread
On 7 Feb 2006, fxcoudert at gcc dot gnu dot org wrote:
> I tried to give it a look on alphaev68-dec-osf5.1b, but I couldn't
> get to the point of configuring libgomp :)
>
> cc -c -DHAVE_CONFIG_H -g -I. -I../../gcc/libiberty/../include -Wc++-compat
> ../../gcc/libiberty/floatformat.c -o ./floatformat.o
> cc: Error: ../../gcc/libiberty/floatformat.c, line 343: In this statement, the
> libraries on this platform do not yet support compile-time evaluation of the
> constant expression "0.0/0.0". (constfoldns)
> dto = NAN;
Hi FX,
Could you try the following for me, and I'll submit it to gcc-patches?
Unfortunately, my OSF_DEV PAK has expired so I rely on gcc for hosting
GCC.
2006-02-07 Roger Sayle <[EMAIL PROTECTED]>
R. Scott Bailey <[EMAIL PROTECTED]>
PR bootstrap/16787
* floatformat.c: Include <float.h> where available.
(NAN): Use value of DBL_QNAN if defined, and NAN isn't.
Index: floatformat.c
===================================================================
*** floatformat.c (revision 110738)
--- floatformat.c (working copy)
***************
*** 1,5 ****
/* IEEE floating point support routines, for GDB, the GNU Debugger.
! Copyright 1991, 1994, 1999, 2000, 2003, 2005
Free Software Foundation, Inc.
This file is part of GDB.
--- 1,5 ----
/* IEEE floating point support routines, for GDB, the GNU Debugger.
! Copyright 1991, 1994, 1999, 2000, 2003, 2005, 2006
Free Software Foundation, Inc.
This file is part of GDB.
*************** Foundation, Inc., 51 Franklin Street - F
*** 31,36 ****
--- 31,41 ----
#include <string.h>
#endif
+ /* On some platforms, <float.h> provides DBL_QNAN. */
+ #ifdef STDC_HEADERS
+ #include <float.h>
+ #endif
+
#include "ansidecl.h"
#include "libiberty.h"
#include "floatformat.h"
*************** Foundation, Inc., 51 Franklin Street - F
*** 44,51 ****
--- 49,60 ----
#endif
#ifndef NAN
+ #ifdef DBL_QNAN
+ #define NAN DBL_QNAN
+ #else
#define NAN (0.0 / 0.0)
#endif
+ #endif
static unsigned long get_field (const unsigned char *,
enum floatformat_byteorders,
Roger
--
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26161
