* mdocml: Don't printf("%s", NULL) if .It has a macro as an argument in a
@ 2016-08-10 12:30 schwarze
0 siblings, 0 replies; only message in thread
From: schwarze @ 2016-08-10 12:30 UTC (permalink / raw)
To: source
Log Message:
-----------
Don't printf("%s", NULL) if .It has a macro as an argument
in a list of a type where items don't takes arguments.
Issue found by tb@ with afl(1).
Modified Files:
--------------
mdocml:
mdoc_validate.c
Revision Data
-------------
Index: mdoc_validate.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mdoc_validate.c,v
retrieving revision 1.303
retrieving revision 1.304
diff -Lmdoc_validate.c -Lmdoc_validate.c -u -p -r1.303 -r1.304
--- mdoc_validate.c
+++ mdoc_validate.c
@@ -1064,10 +1064,11 @@ post_it(POST_ARGS)
mdoc_argnames[nbl->args->argv[0].arg]);
/* FALLTHROUGH */
case LIST_item:
- if (nit->head->child != NULL)
+ if ((nch = nit->head->child) != NULL)
mandoc_vmsg(MANDOCERR_ARG_SKIP,
mdoc->parse, nit->line, nit->pos,
- "It %s", nit->head->child->string);
+ "It %s", nch->string == NULL ?
+ mdoc_macronames[nch->tok] : nch->string);
break;
case LIST_column:
cols = (int)nbl->norm->Bl.ncols;
--
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