diff options
| -rw-r--r-- | xdiff-interface.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/xdiff-interface.c b/xdiff-interface.c index 99661d4..4d20069 100644 --- a/xdiff-interface.c +++ b/xdiff-interface.c @@ -250,9 +250,13 @@ void xdiff_set_find_func(xdemitconf_t *xecfg, const char *value, int cflags) ALLOC_ARRAY(regs->array, regs->nr); for (i = 0; i < regs->nr; i++) { struct ff_reg *reg = regs->array + i; - const char *ep = strchr(value, '\n'), *expression; + const char *ep, *expression; char *buffer = NULL; + if (!value) + BUG("mismatch between line count and parsing"); + ep = strchr(value, '\n'); + reg->negate = (*value == '!'); if (reg->negate && i == regs->nr - 1) die("Last expression must not be negated: %s", value); @@ -265,7 +269,7 @@ void xdiff_set_find_func(xdemitconf_t *xecfg, const char *value, int cflags) if (regcomp(®->re, expression, cflags)) die("Invalid regexp to look for hunk header: %s", expression); free(buffer); - value = ep + 1; + value = ep ? ep + 1 : NULL; } } |