PR middle-end/59138

	* expr.c (emit_group_store): Don't write past the end of the structure.
	(store_bit_field): Fix formatting.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@205436 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 34 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/20131127-1.c b/gcc/testsuite/gcc.c-torture/execute/20131127-1.c
new file mode 100644
index 00000000000..8ec49657741
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20131127-1.c
@@ -0,0 +1,34 @@
+/* PR middle-end/59138 */
+/* Testcase by John Regehr <regehr@cs.utah.edu> */
+
+extern void abort (void);
+
+#pragma pack(1)
+
+struct S0 {
+  int f0;
+  int f1;
+  int f2;
+  short f3;
+};
+
+short a = 1;
+
+struct S0 b = { 1 }, c, d, e;
+
+struct S0 fn1() { return c; }
+
+void fn2 (void)
+{
+  b = fn1 ();
+  a = 0;
+  d = e;
+}
+
+int main (void)
+{
+  fn2 ();
+  if (a != 0)
+    abort ();
+  return 0;
+}