520a02b6fa
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.
PR gas/22318
* plugins.m4 (AC_PLUGINS): Use dlsym to check if libdl is needed.
From-SVN: r259140
|
||
|---|---|---|
| .. | ||
| acinclude.m4 | ||
| acx.m4 | ||
| asmcfi.m4 | ||
| ax_check_define.m4 | ||
| bitfields.m4 | ||
| bootstrap-asan.mk | ||
| bootstrap-cet.mk | ||
| bootstrap-debug-big.mk | ||
| bootstrap-debug-ckovw.mk | ||
| bootstrap-debug-lean.mk | ||
| bootstrap-debug-lib.mk | ||
| bootstrap-debug.mk | ||
| bootstrap-lto-noplugin.mk | ||
| bootstrap-lto.mk | ||
| bootstrap-mpx.mk | ||
| bootstrap-O1.mk | ||
| bootstrap-O3.mk | ||
| bootstrap-time.mk | ||
| bootstrap-ubsan.mk | ||
| cet.m4 | ||
| ChangeLog | ||
| codeset.m4 | ||
| depstand.m4 | ||
| dfp.m4 | ||
| elf.m4 | ||
| enable.m4 | ||
| extensions.m4 | ||
| futex.m4 | ||
| gc++filt.m4 | ||
| gcc-plugin.m4 | ||
| gettext-sister.m4 | ||
| gettext.m4 | ||
| glibc21.m4 | ||
| gthr.m4 | ||
| gxx-include-dir.m4 | ||
| hwcaps.m4 | ||
| iconv.m4 | ||
| intdiv0.m4 | ||
| inttypes_h.m4 | ||
| inttypes-pri.m4 | ||
| inttypes.m4 | ||
| isl.m4 | ||
| largefile.m4 | ||
| lcmessage.m4 | ||
| ld-symbolic.m4 | ||
| lead-dot.m4 | ||
| lib-ld.m4 | ||
| lib-link.m4 | ||
| lib-prefix.m4 | ||
| libstdc++-raw-cxx.m4 | ||
| lthostflags.m4 | ||
| math.m4 | ||
| mh-alpha-linux | ||
| mh-cygwin | ||
| mh-darwin | ||
| mh-djgpp | ||
| mh-mingw | ||
| mh-pa | ||
| mh-pa-hpux10 | ||
| mh-ppc-aix | ||
| mmap.m4 | ||
| mt-alphaieee | ||
| mt-android | ||
| mt-d30v | ||
| mt-gnu | ||
| mt-mips16-compat | ||
| mt-mips-elfoabi | ||
| mt-mips-gnu | ||
| mt-nios2-elf | ||
| mt-ospace | ||
| mt-sde | ||
| mt-spu | ||
| multi.m4 | ||
| nls.m4 | ||
| no-executables.m4 | ||
| override.m4 | ||
| picflag.m4 | ||
| plugins.m4 | ||
| po.m4 | ||
| proginstall.m4 | ||
| progtest.m4 | ||
| sjlj.m4 | ||
| stdint_h.m4 | ||
| stdint.m4 | ||
| target-posix | ||
| tcl.m4 | ||
| tls.m4 | ||
| uintmax_t.m4 | ||
| ulonglong.m4 | ||
| unwind_ipinfo.m4 | ||
| warnings.m4 | ||
| weakref.m4 | ||
| zlib.m4 | ||