[Bug other/55312] New: libbacktrace doesn't honor --disable-werror

[Bug other/55312] New: libbacktrace doesn't honor --disable-werror

[markus at trippelsdorf dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55312

             Bug #: 55312
           Summary: libbacktrace doesn't honor --disable-werror
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: markus@trippelsdorf.de


When gcc is configured with "--disable-werror" and then build with:

% make -j4 BOOT_CFLAGS="-march=native -O3 -pipe" STAGE1_CFLAGS="-march=native
-O3 -pipe" CFLAGS_FOR_TARGET="-march=native -O3 -pipe"
CXXFLAGS_FOR_TARGET="-march=native -O3 -pipe" profiledbootstrap

One gets:
...
/home/markus/gcc/libbacktrace/dwarf.c: In function ‘build_address_map’:
/home/markus/gcc/libbacktrace/dwarf.c:1387:13: error: ‘val.u.string’ may be
used uninitialized in this function [-Werror=maybe-uninitialized]
     lineoff = val.u.uint;
...
/home/markus/gcc/libbacktrace/dwarf.c: In function ‘read_referenced_name’:
/home/markus/gcc/libbacktrace/dwarf.c:2078:36: error: ‘val.u.string’ may be
used uninitialized in this function [-Werror=maybe-uninitialized]
        name = read_referenced_name (ddata, u, val.u.uint,
...
checking ctype.h usability... /home/markus/gcc/libbacktrace/dwarf.c: In
function ‘read_function_entry’:
/home/markus/gcc/libbacktrace/dwarf.c:2329:22: error: ‘val.u.string’ may be
used uninitialized in this function [-Werror=maybe-uninitialized]
       function->name = val.u.string;

[Bug other/55312] libbacktrace doesn't honor --disable-werror

[markus at trippelsdorf dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55312

Markus Trippelsdorf <markus at trippelsdorf dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl.tools at gmail dot com,
                   |                            |iant at google dot com,
                   |                            |markus at trippelsdorf dot
                   |                            |de

--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-13 18:24:50 UTC ---
See also:
http://gcc.gnu.org/ml/gcc-regression/2012-11/msg00279.html

[Bug other/55312] libbacktrace doesn't honor --disable-werror

[ian at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55312

--- Comment #2 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> 2012-11-13 21:25:45 UTC ---
Author: ian
Date: Tue Nov 13 21:25:39 2012
New Revision: 193485

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193485
Log:
    PR other/55312
    * configure.ac: Only add -Werror if building a target library.

Modified:
    trunk/libbacktrace/ChangeLog
    trunk/libbacktrace/configure
    trunk/libbacktrace/configure.ac

[Bug other/55312] libbacktrace doesn't honor --disable-werror

[ian at airs dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55312

Ian Lance Taylor <ian at airs dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |ian at airs dot com
         Resolution|                            |FIXED

--- Comment #3 from Ian Lance Taylor <ian at airs dot com> 2012-11-13 21:28:29 UTC ---
Fixed.