* gcc.c-torture/execute/struct-cpy-1.c: New test.

From-SVN: r57126

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5bd1e4032f94764861edd1ec84a2b05f8ec60e2f..f0be990dbfff4b56788443bcb89adfc6fa3f485a 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2002-09-14  Alan Modra  <amodra@bigpond.net.au>
+
+       * gcc.c-torture/execute/struct-cpy-1.c: New test.
+
 2002-09-13  Nathan Sidwell  <nathan@codesourcery.com>
 
        * g++.dg/template/deduce1.C: New test.

diff --git a/gcc/testsuite/gcc.c-torture/execute/struct-cpy-1.c b/gcc/testsuite/gcc.c-torture/execute/struct-cpy-1.c
new file mode 100644 (file)
index 0000000..52886fe
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/struct-cpy-1.c
@@ -0,0 +1,43 @@
+/* powerpc64-linux gcc miscompiled this due to rs6000.c:expand_block_move
+   not setting mem aliasing info correctly for the code implementing the
+   structure assignment.  */
+
+struct termios
+{
+  unsigned int a;
+  unsigned int b;
+  unsigned int c;
+  unsigned int d;
+  unsigned char pad[28];
+};
+
+struct tty_driver
+{
+  unsigned char pad1[38];
+  struct termios t __attribute__ ((aligned (8)));
+};
+
+static struct termios zero_t;
+static struct tty_driver pty;
+
+void ini (void)
+{
+  pty.t = zero_t;
+  pty.t.a = 1;
+  pty.t.b = 2;
+  pty.t.c = 3;
+  pty.t.d = 4;
+}
+
+int main (void)
+{
+  extern void abort (void);
+
+  ini ();
+  if (pty.t.a != 1
+      || pty.t.b != 2
+      || pty.t.c != 3
+      || pty.t.d != 4)
+    abort ();
+  return 0;
+}