[ this is http://thread.gmane.org/gmane.comp.sysutils.autoconf.bugs/7834 from http://gcc.gnu.org/ml/gcc-patches/2011-02/msg01480.html adding bug-gnulib; followups can elide bug-autoconf ]
* Ralf Wildenhues wrote on Thu, Feb 24, 2011 at 07:24:35AM CET: > IOW, it looks like the replacement code in strstr.c and str-two-way.h > has a bug (or glibc strchr, which seems rather unlikely). Besides > copyright year bumps, these two files have not been updated since in > gnulib. Here's a reproducer. Link with gnulib's strstr.c and it will fail. Thanks, Ralf #include <string.h> #include <stdio.h> int main(void) { const char* hay = "\n" "with_build_libsubdir\n" "with_local_prefix\n" "with_gxx_include_dir\n" "with_cpp_install_dir\n" "enable_generated_files_in_srcdir\n" "with_gnu_ld\n" "with_ld\n" "with_demangler_in_ld\n" "with_gnu_as\n" "with_as\n" "enable_largefile\n" "enable_werror_always\n" "enable_checking\n" "enable_coverage\n" "enable_gather_detailed_mem_stats\n" "enable_build_with_cxx\n" "with_stabs\n" "enable_multilib\n" "enable___cxa_atexit\n" "enable_decimal_float\n" "enable_fixed_point\n" "enable_threads\n" "enable_tls\n" "enable_objc_gc\n" "with_dwarf2\n" "enable_shared\n" "with_build_sysroot\n" "with_sysroot\n" "with_specs\n" "with_pkgversion\n" "with_bugurl\n" "enable_languages\n" "with_multilib_list\n"; const char *needle = "\n" "with_gnu_ld\n"; const char* p = strstr (hay, needle); printf ("searching for %s in %s\n", needle, hay); printf ("found at %d\n", p ? p - hay : -1); return 0; }