aboutsummaryrefslogtreecommitdiffstats
path: root/lib/sh/casemod.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/sh/casemod.c')
-rw-r--r--lib/sh/casemod.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/sh/casemod.c b/lib/sh/casemod.c
index d85549a..3127d8c 100644
--- a/lib/sh/casemod.c
+++ b/lib/sh/casemod.c
@@ -111,6 +111,13 @@ sh_modcase (string, pat, flags)
mbstate_t state;
#endif
+ if (string == 0 || *string == 0)
+ {
+ ret = (char *)xmalloc (1);
+ ret[0] = '\0';
+ return ret;
+ }
+
#if defined (HANDLE_MULTIBYTE)
memset (&state, 0, sizeof (mbstate_t));
#endif