1 files changed, 53 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/i386-bitfield1.c b/gcc/testsuite/gcc.dg/i386-bitfield1.c
new file mode 100644
index 0000000..8045a67
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/i386-bitfield1.c
@@ -0,0 +1,53 @@
+// Test for bitfield alignment in structs on IA-32
+// { dg-do run { target i?86-*-* } }
+// { dg-options "-O2" }
+
+extern void abort (void);
+extern void exit (int);
+
+struct A
+{
+  char a;
+  long long b : 61;
+  char c;
+} a, a4[4];
+
+struct B
+{
+  char d;
+  struct A e;
+  char f;
+} b;
+
+struct C
+{
+  char g;
+  union U
+  {
+    char u1;
+    long long u2;
+    long long u3 : 64;
+  } h;
+  char i;
+} c;
+
+int main (void)
+{
+  if (&a.c - &a.a != 12)
+    abort ();
+  if (sizeof (a) != 16)
+    abort ();
+  if (sizeof (a4) != 4 * 16)
+    abort ();
+  if (sizeof (b) != 2 * 4 + 16)
+    abort ();
+  if (__alignof__ (b.e) != 4)
+    abort ();
+  if (&c.i - &c.g != 12)
+    abort ();
+  if (sizeof (c) != 16)
+    abort ();
+  if (__alignof__ (c.h) != 4)
+    abort ();
+  exit (0);
+}