https://sourceware.org/bugzilla/show_bug.cgi?id=32556
--- Comment #1 from Sourceware Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jan Beulich <[email protected]>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7be4186c22f89a87fff048c28910f5d26a0f61ce commit 7be4186c22f89a87fff048c28910f5d26a0f61ce Author: Dmitry Klochkov <[email protected]> Date: Tue Sep 9 12:06:25 2025 +0200 nm: fix treating an ifunc symbol as a stab if '--ifunc-chars=--' is given If an ifunc symbol is processed in print_symbol(), a 'type' field of a 'syminfo' structure is set to any character specified by a user with an '--ifunc-chars' option. But afterwards the 'type' field is used to check whether a symbol is a stab in print_symbol_info_{bsd,sysv}() functions in order to print additional stab related data. If the 'type' field equals '-', a symbol is treated as a stab. If '--ifunc-chars=--' is given, all ifunc symbols will be treated as stab symbols and uninitialized stab related fields of the 'syminfo' structure will be printed which can lead to segmentation fault. To fix this, check if a symbol is a stab before override the 'type' field. Also, add a test case for this fix. PR binutils/32556 * nm.c (extended_symbol_info): Add is_stab. (print_symbol): Check if a symbol is a stab. (print_symbol_info_bsd): Use info->is_stab. (print_symbol_info_sysv): Use info->is_stab. * testsuite/binutils-all/nm.exp: Test nm --ifunc-chars=--. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=32556 Fixes: e6f6aa8d184 ("Add option to nm to change the characters displayed for ifunc symbols") Signed-off-by: Dmitry Klochkov <[email protected]> -- You are receiving this mail because: You are on the CC list for the bug.
