1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pack-test-4.c b/gcc/testsuite/gcc.dg/pack-test-4.c
new file mode 100644
index 000000000..1ad8ee4fb
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pack-test-4.c
@@ -0,0 +1,36 @@
+/* PR c/11885
+   Bug: flag4 was allocated into the same byte as the other flags.
+   { dg-options "" }
+   { dg-do run } */
+
+extern void abort (void);
+
+typedef unsigned char uint8_t;
+
+typedef struct {
+    uint8_t flag1:2;
+    uint8_t flag2:1;
+    uint8_t flag3:1;
+   
+    uint8_t flag4;
+
+} __attribute__ ((packed)) MyType;
+
+int main (void)
+{
+  MyType a;
+  MyType *b = &a;
+
+  b->flag1 = 0;
+  b->flag2 = 0;
+  b->flag3 = 0;
+
+  b->flag4 = 0;
+
+  b->flag4++;
+    
+  if (b->flag1 != 0)
+    abort ();
+
+  return 0;
+}