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[Bug target/47424] New: [4.6 Regression] Glibc miscompiled

From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
To: gcc-bugs at gcc dot gnu dot org
Date: Sun, 23 Jan 2011 22:12:37 +0000
Subject: [Bug target/47424] New: [4.6 Regression] Glibc miscompiled
Auto-submitted: auto-generated

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47424

           Summary: [4.6 Regression] Glibc miscompiled
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com


On Linux/x86-64, gcc 4.6.0 20110119 miscompiled glibc trunk.
I got

/bin/sh: line 1:  9941 Illegal instruction    
GCONV_PATH=/export/build/gnu/glibc/build-x86_64-linux/iconvdata LC_ALL=C
LD_AUDIT=/export/build/gnu/glibc/build-x86_64-linux/elf/tst-auditmod4b.so
/export/build/gnu/glibc/build-x86_64-linux/elf/ld-linux-x86-64.so.2
--library-path
/export/build/gnu/glibc/build-x86_64-linux:/export/build/gnu/glibc/build-x86_64-linux/math:/export/build/gnu/glibc/build-x86_64-linux/elf:/export/build/gnu/glibc/build-x86_64-linux/dlfcn:/export/build/gnu/glibc/build-x86_64-linux/nss:/export/build/gnu/glibc/build-x86_64-linux/nis:/export/build/gnu/glibc/build-x86_64-linux/rt:/export/build/gnu/glibc/build-x86_64-linux/resolv:/export/build/gnu/glibc/build-x86_64-linux/crypt:/export/build/gnu/glibc/build-x86_64-linux/nptl
/export/build/gnu/glibc/build-x86_64-linux/elf/tst-audit4 >
/export/build/gnu/glibc/build-x86_64-linux/elf/tst-audit4.out
/bin/sh: line 1:  9952 Illegal instruction    
GCONV_PATH=/export/build/gnu/glibc/build-x86_64-linux/iconvdata LC_ALL=C
LD_AUDIT=/export/build/gnu/glibc/build-x86_64-linux/elf/tst-auditmod7b.so
/export/build/gnu/glibc/build-x86_64-linux/elf/ld-linux-x86-64.so.2
--library-path
/export/build/gnu/glibc/build-x86_64-linux:/export/build/gnu/glibc/build-x86_64-linux/math:/export/build/gnu/glibc/build-x86_64-linux/elf:/export/build/gnu/glibc/build-x86_64-linux/dlfcn:/export/build/gnu/glibc/build-x86_64-linux/nss:/export/build/gnu/glibc/build-x86_64-linux/nis:/export/build/gnu/glibc/build-x86_64-linux/rt:/export/build/gnu/glibc/build-x86_64-linux/resolv:/export/build/gnu/glibc/build-x86_64-linux/crypt:/export/build/gnu/glibc/build-x86_64-linux/nptl
/export/build/gnu/glibc/build-x86_64-linux/elf/tst-audit7 >
/export/build/gnu/glibc/build-x86_64-linux/elf/tst-audit7.out
/bin/sh: line 1:  9951 Illegal instruction    
GCONV_PATH=/export/build/gnu/glibc/build-x86_64-linux/iconvdata LC_ALL=C
LD_AUDIT=/export/build/gnu/glibc/build-x86_64-linux/elf/tst-auditmod6b.so:/export/build/gnu/glibc/build-x86_64-linux/elf/tst-auditmod6c.so
/export/build/gnu/glibc/build-x86_64-linux/elf/ld-linux-x86-64.so.2
--library-path
/export/build/gnu/glibc/build-x86_64-linux:/export/build/gnu/glibc/build-x86_64-linux/math:/export/build/gnu/glibc/build-x86_64-linux/elf:/export/build/gnu/glibc/build-x86_64-linux/dlfcn:/export/build/gnu/glibc/build-x86_64-linux/nss:/export/build/gnu/glibc/build-x86_64-linux/nis:/export/build/gnu/glibc/build-x86_64-linux/rt:/export/build/gnu/glibc/build-x86_64-linux/resolv:/export/build/gnu/glibc/build-x86_64-linux/crypt:/export/build/gnu/glibc/build-x86_64-linux/nptl
/export/build/gnu/glibc/build-x86_64-linux/elf/tst-audit6 >
/export/build/gnu/glibc/build-x86_64-linux/elf/tst-audit6.out

Gcc 4.5 is OK.

Follow-Ups:
- [Bug target/47424] [4.6 Regression] Glibc miscompiled
  - From: rguenth at gcc dot gnu.org
- [Bug target/47424] [4.6 Regression] Glibc miscompiled
  - From: jakub at gcc dot gnu.org
- [Bug target/47424] [4.6 Regression] Glibc miscompiled
  - From: schwab at linux-m68k dot org

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