Check for NULL before incrementing

diff --git a/scripts/jlibtool.c b/scripts/jlibtool.c
index 6ffaf4b..a34a5d5 100644 (file)
--- a/scripts/jlibtool.c
+++ b/scripts/jlibtool.c
@@ -969,7 +969,14 @@ static char *gen_library_name(const char *name, enum lib_type genlib)
         strcpy(newarg, name);
     }
 
-    newext = strrchr(newarg, '.') + 1;
+    newext = strrchr(newarg, '.');
+    if (!newext) {
+        printf("Error: Library path does not have an extension");
+       free(newarg);
+       
+       return NULL;
+    }
+    newext++;
 
     switch (genlib) {
     case type_STATIC_LIB:
@@ -1076,13 +1083,14 @@ static char *check_library_exists(command_t *cmd, const char *arg, int pathlen,
     }
 
     strcpy(newarg + newpathlen, arg + pathlen);
-    ext = strrchr(newarg, '.') + 1;
+    ext = strrchr(newarg, '.');
     if (!ext) {
        printf("Error: Library path does not have an extension");
        free(newarg);
        
        return NULL;
     }
+    ext++;
 
     pass = 0;