gc: function argument ordering bug

Fixes #370.

R=ken2
https://golang.org/cl/163097

1 files changed, 38 insertions, 0 deletions

diff --git a/test/fixedbugs/bug221.go b/test/fixedbugs/bug221.go
new file mode 100644
index 0000000000..39255d6f9c
--- /dev/null
+++ b/test/fixedbugs/bug221.go
@@ -0,0 +1,38 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// function call arg reordering was picking out 1 call that
+// didn't need to be in a temporary, but it was picking
+// out the first call instead of the last call.
+// http://code.google.com/p/go/issues/detail?id=370
+
+package main
+
+var gen = 'a'
+func f(n int) string {
+	s := string(gen) + string(n+'A'-1);
+	gen++;
+	return s;
+}
+
+func g(x, y string) string {
+	return x + y
+}
+
+func main() {
+	s := f(1) + f(2);
+	if s != "aAbB" {
+		panic("BUG: bug221a: ", s);
+	}
+	s = g(f(3), f(4));
+	if s != "cCdD" {
+		panic("BUG: bug221b: ", s);
+	}
+	s = f(5) + f(6) + f(7) + f(8) + f(9);
+	if s != "eEfFgGhHiI" {
+		panic("BUG: bug221c: ", s);
+	}
+}