[Bug breakpoints/14381] New: Got a lot of "Error in re-settingbreakpoint 1: malformed linespec error: unexpected string, ".c"" andbreakpoint invalid

["teawater at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14381

             Bug #: 14381
           Summary: Got a lot of "Error in re-setting breakpoint 1:
                    malformed linespec error: unexpected string, ".c"" and
                    breakpoint invalid
           Product: gdb
           Version: 7.5
            Status: NEW
          Severity: critical
          Priority: P2
         Component: breakpoints
        AssignedTo: unassigned@sourceware.org
        ReportedBy: teawater@gmail.com
    Classification: Unclassified


cat 2.c
int 
main (int argc, char *argv[], char *envp[]) 
{
    return 0;
}


gcc -v 
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.6.3-1ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.6 --enable-shared --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object
--enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) 



gdb ./a.out 
GNU gdb (GDB) 7.5.50.20120721-cvs
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/teawater/tmp/a.out...done.
(gdb) b 3
Breakpoint 1 at 0x4004c3: file 2.c, line 3.
(gdb) r
Starting program: /home/teawater/tmp/a.out 
Error in re-setting breakpoint 1: malformed linespec error: unexpected string,
".c"
Error in re-setting breakpoint 1: malformed linespec error: unexpected string,
".c"
Error in re-setting breakpoint 1: malformed linespec error: unexpected string,
".c"
Error in re-setting breakpoint 1: malformed linespec error: unexpected string,
".c"
[Inferior 1 (process 11361) exited normally]
(gdb) quit





gcc-4.4 -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.4.7-1ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.4 --enable-shared --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-objc-gc --disable-werror --with-arch-32=i686
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.7 (Ubuntu/Linaro 4.4.7-1ubuntu2) 

gcc-4.4 -g 2.c


gdb ./a.out 
GNU gdb (GDB) 7.5.50.20120721-cvs
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/teawater/tmp/a.out...done.
(gdb) b 3
Breakpoint 1 at 0x4004c3: file 2.c, line 3.
(gdb) r
Starting program: /home/teawater/tmp/a.out 
Error in re-setting breakpoint 1: malformed linespec error: unexpected string,
".c"
Error in re-setting breakpoint 1: malformed linespec error: unexpected string,
".c"
Error in re-setting breakpoint 1: malformed linespec error: unexpected string,
".c"
Error in re-setting breakpoint 1: malformed linespec error: unexpected string,
".c"
[Inferior 1 (process 11375) exited normally]

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