added testcase for issue #1462

test/todo/bug1462.c

@@ -0,0 +1,67 @@
+
+/* issue #1462 - Bit-fields are still broken */
+
+#include <stdio.h>
+
+typedef struct {
+    signed int a : 3;
+    signed int b : 3;
+    signed int c : 3;
+} T;
+
+int failures = 0;
+
+void test()
+{
+    T a = {2, 5, -1};
+    T b = {1, 4, -1};
+    T m[1] = {{6, 3, -1}};
+    T *p = &a;
+
+    a.c += b.a;
+    p->c += b.b;
+    m->c += b.c;
+
+    if (a.c != -4) {
+        ++failures;
+    }
+    printf("%d\n", a.c);
+
+    if (p->c != -4) {
+        ++failures;
+    }
+    printf("%d\n", p->c);
+
+    if (m->c != -2) {
+        ++failures;
+    }
+    printf("%d\n", m->c);
+
+    ++a.a;
+    p->b++;
+    m->c--;
+
+    if (a.a != 3) {
+        ++failures;
+    }
+    printf("%d\n", a.a);
+
+    if (p->b != -2) {
+        ++failures;
+    }
+    printf("%d\n", p->b);
+
+    if (m->c != -3) {
+        ++failures;
+    }
+    printf("%d\n", m->c);
+
+    printf("Failures: %d\n", failures);
+}
+
+int main(void)
+{
+    test();
+    return failures;
+}
+