1 files changed, 11 insertions, 0 deletions
diff --git a/stpset.c b/stpset.c
index 4e5c134..08651fa 100644
--- a/stpset.c
+++ b/stpset.c
@@ -12,6 +12,17 @@ extern inline char *libsimple_stpset(char *, int);
 int
 main(void)
 {
+	char buf[100];
+
+	stpcpy(mempcpy(buf, "hello world", 12), "goodbye world");
+	assert(libsimple_stpset(buf, 'x') == &buf[11]);
+	assert(!strcmp(buf, "xxxxxxxxxxx"));
+	assert(!strcmp(&buf[12], "goodbye world"));
+
+	stpcpy(mempcpy(buf, "hello world", 12), "goodbye world");
+	assert(libsimple_stpset(buf, '\0') == &buf[11]);
+	assert(!memcmp(buf, "\0\0\0\0\0\0\0\0\0\0\0\0goodbye world", 26));
+
 	return 0;
 }