Add -fno-show-column to libstdc++ test flags

	* scripts/testsuite_flags.in: Add -fno-show-column to cxxflags.

From-SVN: r238993

libstdc++-v3/ChangeLog

 2016-08-02  Jonathan Wakely  <jwakely@redhat.com>
 
+	* scripts/testsuite_flags.in: Add -fno-show-column to cxxflags.
+
 	* testsuite/18_support/bad_exception/23591_thread-1.c: Skip test if
 	options are present that aren't valid for C.
 	* testsuite/abi/header_cxxabi.c: Likewise.

libstdc++-v3/scripts/testsuite_flags.in

@@ -56,7 +56,7 @@ case ${query} in
       echo ${CC}
       ;;
     --cxxflags)
-      CXXFLAGS_default="-D_GLIBCXX_ASSERT -fmessage-length=0"
+      CXXFLAGS_default="-D_GLIBCXX_ASSERT -fmessage-length=0 -fno-show-column"
       CXXFLAGS_config="@SECTION_FLAGS@ @EXTRA_CXX_FLAGS@"
       echo ${CXXFLAGS_default} ${CXXFLAGS_config} 
       ;;