From 3cba8b6c93ab8c573ba4678255df11486de61c54 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Thu, 5 Apr 2018 15:31:41 -0700 Subject: Use dlsym to check if libdl is needed for plugin config/plugins.m4 has if test "$plugins" = "yes"; then AC_SEARCH_LIBS([dlopen], [dl]) fi Plugin uses dlsym, but libasan.so only intercepts dlopen, not dlsym: [hjl@gnu-tools-1 binutils-text]$ nm -D /lib64/libasan.so.4| grep " dl" 0000000000038580 W dlclose U dl_iterate_phdr 000000000004dc50 W dlopen U dlsym U dlvsym [hjl@gnu-tools-1 binutils-text]$ Testing dlopen for libdl leads to false negative when -fsanitize=address is used. It results in link failure: ../bfd/.libs/libbfd.a(plugin.o): undefined reference to symbol 'dlsym@@GLIBC_2.16' dlsym should be used to check if libdl is needed for plugin. bfd/ PR gas/22318 * configure: Regenerated. binutils/ PR gas/22318 * configure: Regenerated. gas/ PR gas/22318 * configure: Regenerated. gprof/ PR gas/22318 * configure: Regenerated. ld/ PR gas/22318 * configure: Regenerated. --- gprof/ChangeLog | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'gprof/ChangeLog') diff --git a/gprof/ChangeLog b/gprof/ChangeLog index bfe1f27..da15c98 100644 --- a/gprof/ChangeLog +++ b/gprof/ChangeLog @@ -1,3 +1,8 @@ +2018-04-05 H.J. Lu + + PR gas/22318 + * configure: Regenerated. + 2018-03-01 Alan Modra * configure.ac (ALL_LINGUAS): Add it, ro, ru, uk. Sort. -- cgit v1.1