https://sourceware.org/bugzilla/show_bug.cgi?id=25355
--- Comment #27 from Martin Liška <marxin.liska at gmail dot com> ---
>
> Works for me on master branch. Please try master branch to see if
> it works for you.
It looks one needs a system setup to have multiple plug-in which cause that:
$ ls /usr/bin/../bin/../lib/bfd-plugins
liblto_plugin.so.0.0.0 LLVMgold.so
Now I put breakpoint here: try_load_plugin
and I see:
Breakpoint 2, try_load_plugin (pname=pname@entry=0x5555555653f0
"/usr/bin/../bin/../lib/bfd-plugins/liblto_plugin.so.0.0.0",
abfd=abfd@entry=0x555555564a70, has_plugin_p=has_plugin_p@entry=0x7fffffffd97c)
at ../../bfd/plugin.c:593
593 {
(gdb) fin
Run till exit from #0 try_load_plugin (pname=pname@entry=0x5555555653f0
"/usr/bin/../bin/../lib/bfd-plugins/liblto_plugin.so.0.0.0",
abfd=abfd@entry=0x555555564a70, has_plugin_p=has_plugin_p@entry=0x7fffffffd97c)
at ../../bfd/plugin.c:593
load_plugin (abfd=0x555555564a70) at ../../bfd/plugin.c:844
844 if (has_plugin <= 0)
Value returned is $15 = 0
(gdb) list
839 if (stat (full_name, &st) == 0 && S_ISREG
(st.st_mode))
840 {
841 int valid_plugin;
842
843 found = try_load_plugin (full_name, abfd,
&valid_plugin);
844 if (has_plugin <= 0)
845 has_plugin = valid_plugin;
846 }
847 free (full_name);
848 if (found)
(gdb) n
845 has_plugin = valid_plugin;
(gdb)
847 free (full_name);
(gdb) p full_name
$16 = 0x5555555653f0
"/usr/bin/../bin/../lib/bfd-plugins/liblto_plugin.so.0.0.0"
(gdb) p current_plugin->plugin_name
$17 = 0x5555555653f0
"/usr/bin/../bin/../lib/bfd-plugins/liblto_plugin.so.0.0.0"
So the free for full_name is called, but the pointer is stored in
current_plugin->plugin_name. And later compared with..
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