[Bug c/55651] New: gcc hangs when "-Wp," is passed on the command line

["steve.ulrich at broadcom dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55651

             Bug #: 55651
           Summary: gcc hangs when "-Wp," is passed on the command line
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: steve.ulrich@broadcom.com


If a user neglects to add the required parameter at the end of the "-Wp,"
prefix and just lists "-Wp," on the command line, gcc hangs.  To reproduce,
issue the following commands:

$ cp /dev/null testfile.c
$ gcc -Wp, -c testfile.c

This has been reproduced on a GCC cross compiler for PowerPC, and also for ARM,
so is believed to be reproducible regardless of the target CPU architecture.

"gcc -v" output:

Using built-in specs.
COLLECT_GCC=/projects/nwsoft-toolchains/brl/brl_2.1/brl_2.1.0/northstar/usr/bin/arm-broadcom-linux-uclibcgnueabi-gcc
COLLECT_LTO_WRAPPER=/projects/nwsoft-toolchains/brl/brl_2.1/brl_2.1.0/northstar/usr/libexec/gcc/arm-broadcom-linux-uclibcgnueabi/4.7.2/lto-wrapper
Target: arm-broadcom-linux-uclibcgnueabi
Configured with:
/projects/broadcom-linux/Northstar/tools/output/toolchain/gcc-4.7.2/configure
--prefix=/projects/nwsoft-toolchains/brl/brl_2.1/brl_2.1.0/northstar/usr
--build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu
--target=arm-broadcom-linux-uclibcgnueabi --enable-languages=c,c++
--with-sysroot=/projects/nwsoft-toolchains/brl/brl_2.1/brl_2.1.0/northstar/usr/arm-broadcom-linux-uclibcgnueabi/sysroot
--with-build-time-tools=/projects/nwsoft-toolchains/brl/brl_2.1/brl_2.1.0/northstar/usr/arm-broadcom-linux-uclibcgnueabi/bin
--disable-__cxa_atexit --enable-target-optspace --disable-libgomp --with-gnu-ld
--disable-libssp --disable-multilib --enable-tls --enable-shared
--with-gmp=/projects/nwsoft-toolchains/brl/brl_2.1/brl_2.1.0/northstar/usr
--with-mpfr=/projects/nwsoft-toolchains/brl/brl_2.1/brl_2.1.0/northstar/usr
--with-mpc=/projects/nwsoft-toolchains/brl/brl_2.1/brl_2.1.0/northstar/usr
--disable-nls --enable-threads --disable-decimal-float --with-float=soft
--with-abi=aapcs-linux --with-arch=armv7-a --with-tune=cortex-a9
--with-pkgversion='Buildroot 2012.11-git-00621-gc13e2bc-dirty'
--with-bugurl=http://bugs.buildroot.net/ --with-pkgversion='Broadcom Linux
v2.1'
Thread model: posix
gcc version 4.7.2