Bugs with 1- empty bitfields, 2- anonymous bitfields, 3- result type of reading a small unsigned bitfield

git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1496 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e

1 files changed, 28 insertions, 0 deletions

diff --git a/test/regression/bitfields5.c b/test/regression/bitfields5.c
new file mode 100644
index 0000000..169098e
--- /dev/null
+++ b/test/regression/bitfields5.c
@@ -0,0 +1,28 @@
+#include <stdio.h>
+
+struct S1 {
+  unsigned f0 : 13;
+  unsigned : 6;
+  unsigned f1 : 5;
+  unsigned : 0;
+  unsigned f2 : 8;
+};
+
+struct S1 g_207 = {1,2,3};
+
+void print_S1(struct S1 * p)
+{
+  printf("f0 = %u, f1 = %u, f2 = %u, second = %u\n",
+         p->f0, p->f1, p->f2, 
+         *((unsigned char *)p + 4));
+}
+
+int main()
+{
+  struct S1 x;
+
+  print_S1(&g_207);
+  x.f0 = 123; x.f1 = 4; x.f2 = 56;
+  print_S1(&x);
+  return 0;
+}