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| author | Alan Modra <amodra@gmail.com> | 2020-08-26 14:23:42 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-08-26 23:23:44 +0930 |
| commit | aaf9875ef9252ec42bafac076421cc5ff22965ad (patch) | |
| tree | 58096aa2a533deff2b72397bb2a5ecd561599b86 | |
| parent | 9863cbb7bd3495107a5b1b4d887c95d859c9a35e (diff) | |
| download | gdb-aaf9875ef9252ec42bafac076421cc5ff22965ad.zip gdb-aaf9875ef9252ec42bafac076421cc5ff22965ad.tar.gz gdb-aaf9875ef9252ec42bafac076421cc5ff22965ad.tar.bz2 | |
PR26431 UBSAN: pe-dll.c:568 null pointer bsearch
PR 26431
* pe-dll.c (auto_export): Don't call bsearch with zero count.
| -rw-r--r-- | ld/ChangeLog | 5 | ||||
| -rw-r--r-- | ld/pe-dll.c | 5 |
2 files changed, 8 insertions, 2 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index a12f913..882e1c9 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,8 @@ +2020-08-26 Alan Modra <amodra@gmail.com> + + PR 26431 + * pe-dll.c (auto_export): Don't call bsearch with zero count. + 2020-08-25 Alan Modra <amodra@gmail.com> * testsuite/ld-libs/libs.exp: Don't run on sh-pe, tic30 or tic54x. diff --git a/ld/pe-dll.c b/ld/pe-dll.c index 3e8fe1b..39c8e4c 100644 --- a/ld/pe-dll.c +++ b/ld/pe-dll.c @@ -565,8 +565,9 @@ auto_export (bfd *abfd, def_file *d, const char *n) key.name = key.its_name = (char *) n; /* Return false if n is in the d->exports table. */ - if (bsearch (&key, d->exports, d->num_exports, - sizeof (pe_def_file->exports[0]), pe_export_sort)) + if (d->num_exports != 0 + && bsearch (&key, d->exports, d->num_exports, + sizeof (pe_def_file->exports[0]), pe_export_sort)) return 0; if (pe_dll_do_default_excludes) |