From bec140143ba6fc043b1901024ce03bf931af517c Mon Sep 17 00:00:00 2001
From: mrdudz <mrdudz@users.noreply.github.com>
Date: Mon, 13 Jul 2020 15:13:06 +0200
Subject: [PATCH] added testcase for issue #760

---
 test/misc/bug264.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 test/misc/bug264.c

diff --git a/test/misc/bug264.c b/test/misc/bug264.c
new file mode 100644
index 000000000..a114939a4
--- /dev/null
+++ b/test/misc/bug264.c
@@ -0,0 +1,62 @@
+/* bug #264 - cc65 fails to warn about a function returning struct */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+typedef uint16_t u16;
+typedef uint8_t u8;
+
+typedef struct {
+    u16 quot;
+    u16 rem;
+} udiv_t;
+
+udiv_t div3(u16 in) {
+
+    udiv_t u;
+    u16 q = 0;
+
+    while (in >= 300) {
+        in -= 300;
+        q += 100;
+    }
+
+    while (in >= 30) {
+        in -= 30;
+        q += 10;
+    }
+
+    while (in >= 3) {
+        in -= 3;
+        ++q;
+    }
+
+    u.quot = q;
+    u.rem = in;
+
+    return u;
+}
+
+int res = 0;
+
+int main(void) {
+
+    u16 i;
+    div_t d;
+    udiv_t u;
+
+    for (i = 1024; i; i--) {
+        d = div(i, 3);
+        u = div3(i);
+
+        if (d.quot != u.quot || d.rem != u.rem) {
+            printf("Mismatch at %u/3, div %u %u, div3 %u %u\n", i,
+                d.quot, d.rem, u.quot, u.rem);
+            res++;
+        }
+    }
+
+    return res;
+}
+