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| author |   Nick Clifton <nickc@redhat.com> | 2016-12-05 13:11:01 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2016-12-05 13:11:01 +0000 |
| commit | 88add6d8e794073758b5398c52bbb76ab40a2923 (patch) | |
| tree | 3e65c30add5d29ea1f07dd1d981027982a7228b6 | |
| parent | Fix seg-fault in linker parsing a corrupt input file. (diff) | |
| download | binutils-gdb-88add6d8e794073758b5398c52bbb76ab40a2923.tar.gz binutils-gdb-88add6d8e794073758b5398c52bbb76ab40a2923.tar.bz2 binutils-gdb-88add6d8e794073758b5398c52bbb76ab40a2923.zip | |
Fix seg-fault running strip on a corrupt binary.
PR ld/20923
* objcopy.c (mark_symbols_used_in_relocations): Check for a null
symbol pointer before attempting to mark the symbol as kept.
| -rw-r--r-- | binutils/ChangeLog | 6 | ||||
| -rw-r--r-- | binutils/objcopy.c | 4 |
2 files changed, 9 insertions, 1 deletions
diff --git a/binutils/ChangeLog b/binutils/ChangeLog index cf54b0fdbe2..bfb180424fd 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,3 +1,9 @@ +2016-12-05 Nick Clifton <nickc@redhat.com> + + PR ld/20923 + * objcopy.c (mark_symbols_used_in_relocations): Check for a null + symbol pointer before attempting to mark the symbol as kept. + 2016-12-01 Luis Machado <lgustavo@codesourcery.com> * nm.c (sort_symbols_by_size): Don't read symbol size if symbol diff --git a/binutils/objcopy.c b/binutils/objcopy.c index 4910fcf8abd..6a398ce4dca 100644 --- a/binutils/objcopy.c +++ b/binutils/objcopy.c @@ -3551,7 +3551,9 @@ mark_symbols_used_in_relocations (bfd *ibfd, sec_ptr isection, void *symbolsarg) special bfd section symbols, then mark it with BSF_KEEP. */ for (i = 0; i < relcount; i++) { - if (*relpp[i]->sym_ptr_ptr != bfd_com_section_ptr->symbol + /* See PR 20923 for a reproducer for the NULL test. */ + if (relpp[i]->sym_ptr_ptr != NULL + && *relpp[i]->sym_ptr_ptr != bfd_com_section_ptr->symbol && *relpp[i]->sym_ptr_ptr != bfd_abs_section_ptr->symbol && *relpp[i]->sym_ptr_ptr != bfd_und_section_ptr->symbol) (*relpp[i]->sym_ptr_ptr)->flags |= BSF_KEEP; |