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| author | Ingo Schwarze <schwarze@openbsd.org> | 2015-04-29 14:48:53 +0000 |
|---|---|---|
| committer | Ingo Schwarze <schwarze@openbsd.org> | 2015-04-29 14:48:53 +0000 |
| commit | db57abddea61d27902926e8bc578816ece975d27 (patch) | |
| tree | 562ac18d67e58816a4bcf2eb13fe6aa0fa37aac2 | |
| parent | f7b136b7e6f8f82ddfee731bb4f5519e3c57b2fb (diff) | |
| download | mandoc-db57abddea61d27902926e8bc578816ece975d27.tar.gz | |
Do not mark a block with the MDOC_BROKEN flag if it merely contains
a mismatching explicit end macro without actually being broken.
Avoids a subsequent upward search for the non-existent breaker
ending up in a NULL pointer access; afl test case 005/Apr27 from jsg@.
| -rw-r--r-- | mdoc_macro.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mdoc_macro.c b/mdoc_macro.c index 115fefe8..0ac00cd8 100644 --- a/mdoc_macro.c +++ b/mdoc_macro.c @@ -644,6 +644,8 @@ blk_exp_close(MACRO_PROT_ARGS) if (body == NULL) { mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse, line, ppos, mdoc_macronames[tok]); + if (later != NULL) + later->flags &= ~MDOC_BROKEN; if (maxargs && endbody == NULL) { /* * Stray .Ec without previous .Eo: |