Fixes: debbugs:20156

[gnu-emacs] / src / fontset.c

diff --git a/src/fontset.c b/src/fontset.c
index c0303fa5a34d25f4b1e40bcedb6de04ec179462d..763d84628b54dc4af8136c299a38c57fa16f0768 100644 (file)
--- a/src/fontset.c
+++ b/src/fontset.c
@@ -1074,7 +1074,7 @@ fontset_pattern_regexp (Lisp_Object pattern)
         expression matching.  */
       ptrdiff_t regexsize = (SBYTES (pattern)
                             + (ndashes < 14 ? 2 : 5) * nstars
-                            + 2 * nescs + 1);
+                            + 2 * nescs + 3);
       USE_SAFE_ALLOCA;
       p1 = regex = SAFE_ALLOCA (regexsize);