pr11736-1-test.patch

linux下编译交叉工具链的工具源码

--- /dev/null	Sat Dec 14 13:56:51 2002
+++ gcc-3.3.1/gcc/testsuite/gcc.dg/pr11736-1.c	Sun Sep 14 14:26:33 2003
@@ -0,0 +1,45 @@
+/* PR optimization/11736
+ * Reporter: [e-mail]
+ * Summary:  Stackpointer messed up on SuperH
+ * Keywords: wrong-code
+ * Description:
+ * When a function with 5 arguments is called in both branches of a
+ * conditional, and only the last argument differs, the code to push that
+ * last argument on the stack gets confused. 
+ * Space for the fifth argument is reserved on the stack by the
+ * instruction I have marked as "A".  However, if the else-branch is
+ * taken the stackpointer is decremented _again_ at "B".  This
+ * decrementation is never restored, and it is only due to the
+ * restoration of r15 from r14 that the function works at all.  With
+ * -fomit-frame-pointer it will crash.
+ *
+ * Testcase tweaked by [e-mail]
+ * Not marked as xfail since it's a regression from hardhat 2.0 gcc-2.97 
+ * and dodes gcc-3.0.2
+ */
+
+/* { dg-do run } */
+/* { dg-options "-O1 -fomit-frame-pointer" } */
+
+int expected_e;
+
+void bar(int a, int b, int c, int d, int e)
+{
+	if (e != expected_e)
+		abort();
+}
+
+void foo(int a)
+{
+	if (a)
+		bar(0, 0, 0, 0, 1);
+	else
+		bar(0, 0, 0, 0, 0);	/* stack pointer decremented extra time here, causing segfault */
+}
+
+int main(int argc, char **argv)
+{
+	for (expected_e = 0; expected_e < 2; expected_e++)
+		foo(expected_e);
+	return 0;
+}