X-Git-Url: http://git.marmaro.de/?p=mmh;a=blobdiff_plain;f=sbr%2Futils.c;h=50060ae7c42b2a4faa7bb64a863030a84cdde1cf;hp=f61456d6f8ebfde0857b1392dab49a94396a9065;hb=a4ff68e851c0931ced437f73a1acb0fedb28bec3;hpb=d4c34b4439a9dbd89664de460ed37ecddc260fb1

diff --git a/sbr/utils.c b/sbr/utils.c
index f61456d..50060ae 100644
--- a/sbr/utils.c
+++ b/sbr/utils.c
@@ -107,14 +107,14 @@ pwd(void)
 /*
 ** add   -- If "s1" is NULL, this routine just creates a
 **       -- copy of "s2" into newly malloc'ed memory.
-**       -- (use getcpy() instead in this case)
+**       -- (use mh_xstrdup() instead in this case)
 **       --
 **       -- If "s1" is not NULL, then copy the concatenation
 **       -- of "s1" and "s2" (note the order) into newly
 **       -- malloc'ed memory.  Then free "s1".
 */
 char *
-add(char *s2, char *s1)
+add(const char *s2, char *s1)
 {
 	char *cp;
 	size_t len1 = 0, len2 = 0;
@@ -218,3 +218,19 @@ app_msgarg(struct msgs_array *msgs, char *cp)
 	}
 	msgs->msgs[msgs->size++] = cp;
 }
+
+/*
+** mh_xstrdup() is a wrapper of strdup() to replace getcpy().  It returns
+** a copy of its argument if this is nonnull; otherwise, it returns a
+** string of length 0.
+*/
+char *
+mh_xstrdup(const char * s)
+{
+	char * tmp;
+	tmp = strdup(s ? s : "");
+	if (!tmp) {
+		adios(EX_OSERR, "strdup", "can't copy string");
+	}
+	return tmp;
+}