From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Tue, 22 May 2012 21:52:56 +0000 (+0000)
Subject: runtime: Tweak runtime.Callers for Go 1 compatibility.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4579805199475b408ec9a837b0f27c9e1c9d0f6d;hp=19460426c33107c0c1d3e94517fdddd0ea3fcf2f;p=gcc.git

runtime: Tweak runtime.Callers for Go 1 compatibility.

From-SVN: r187781
---

diff --git a/libgo/runtime/go-callers.c b/libgo/runtime/go-callers.c
index 2d8fce73de4..3eea5f2cead 100644
--- a/libgo/runtime/go-callers.c
+++ b/libgo/runtime/go-callers.c
@@ -72,5 +72,8 @@ int Callers (int, struct __go_open_array)
 int
 Callers (int skip, struct __go_open_array pc)
 {
-  return runtime_callers (skip, (uintptr *) pc.__values, pc.__count);
+  /* In the Go 1 release runtime.Callers has an off-by-one error,
+     which we can not correct because it would break backward
+     compatibility.  Adjust SKIP here to be compatible.  */
+  return runtime_callers (skip - 1, (uintptr *) pc.__values, pc.__count);
 }