* mdocml: Fix a NULL pointer dereference reported by Theo Buehler <theo
@ 2014-10-25 15:06 schwarze
0 siblings, 0 replies; only message in thread
From: schwarze @ 2014-10-25 15:06 UTC (permalink / raw)
To: source
Log Message:
-----------
Fix a NULL pointer dereference reported
by Theo Buehler <theo at math dot ethz dot ch> on tech at openbsd:
Do not attempt to parse empty equations.
Modified Files:
--------------
mdocml:
eqn.c
Revision Data
-------------
Index: eqn.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/eqn.c,v
retrieving revision 1.55
retrieving revision 1.56
diff -Leqn.c -Leqn.c -u -p -r1.55 -r1.56
--- eqn.c
+++ eqn.c
@@ -684,7 +684,9 @@ eqn_parse(struct eqn_node *ep, struct eq
char sym[64];
const char *start;
- assert(NULL != parent);
+ assert(parent != NULL);
+ if (ep->data == NULL)
+ return(-1);
next_tok:
tok = eqn_tok_parse(ep, &p);
--
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