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[Bug libc/4507] New: sysv/linux/i386/sysdep.h problems with asm-preproc that define __i686
- From: "eggert at gnu dot org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 14 May 2007 18:17:54 -0000
- Subject: [Bug libc/4507] New: sysv/linux/i386/sysdep.h problems with asm-preproc that define __i686
- Reply-to: sourceware-bugzilla at sourceware dot org
An old bug-glibc message for glibc 2.3.1
<http://lists.gnu.org/archive/html/bug-glibc/2003-01/msg00016.html> seemingly
didn't get followed up on. Simon Poole reported a similar problem for a
crosstool build; see <http://sourceware.org/ml/crossgcc/2004-11/msg00013.html>.
The problem is that an __asm__ generates code containing the symbol __i686, but
some preprocessor/compiler combinations automatically #define __i686 to 1, which
messes up the generated code.
On 2004-05-17 a similar problem was fixed in
sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h by renaming the affected symbol;
see
<http://cvs.savannah.gnu.org/viewvc/libc/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h?root=libc&r1=1.13&r2=1.14>.
I'll attach a similar (but untested) patch for
sysdeps/unix/sysv/linux/i386/sysdep.h.
--
Summary: sysv/linux/i386/sysdep.h problems with asm-preproc that
define __i686
Product: glibc
Version: 2.4
Status: NEW
Severity: normal
Priority: P2
Component: libc
AssignedTo: drepper at redhat dot com
ReportedBy: eggert at gnu dot org
CC: glibc-bugs at sources dot redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=4507
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