Merge pull request cc65#2397 from colinleroy/bug-2395-test

Add test case for issue cc65#2395

test/todo/bug2395.c

@@ -0,0 +1,51 @@
+
+/* bug #2395: Bitwise operators with a boolean expression fail when optimized */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+unsigned char a, b;
+unsigned char c = 199;
+unsigned char d = 100;
+
+int main(void) {
+    int fails = 0;
+
+    a = c ^ (d != 0);
+    b = c ^ 1;
+
+    printf("%u ^ (%u != 0) => %u\n", c, d, a);
+    if (a != b) {
+      printf("XOR error: a %d instead of %d\n", a, b);
+      fails++;
+    }
+
+    a = c | (d != 0);
+    b = c | 1;
+
+    printf("%u | (%u != 0) => %u\n", c, d, a);
+    if (a != b) {
+      printf("OR error: a %d instead of %d\n", a, b);
+      fails++;
+    }
+
+    a = c & (d != 0);
+    b = c & 1;
+
+    printf("%u & (%u != 0) => %u\n", c, d, a);
+    if (a != b) {
+      printf("AND error: a %d instead of %d\n", a, b);
+      fails++;
+    }
+    printf("%d errors\n", fails);
+
+#ifdef __OPT__
+    return fails;
+#else
+    /* Force exit failure on non-optimised version, which works,
+     * otherwise it breaks the build
+     */
+    return 1;
+#endif
+}