Mesa (glsl2): glsl2: Don' t forget to walk the parameters to a function in the hv.

[Eric Anholt]

Module: Mesa
Branch: glsl2
Commit: 773025b92c934014b9ceb4ebfdabcfc9d8587aa2
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=773025b92c934014b9ceb4ebfdabcfc9d8587aa2

Author: Eric Anholt <eric at anholt.net>
Date:   Wed Jul  7 08:38:16 2010 -0700

glsl2: Don't forget to walk the parameters to a function in the hv.

Fixes segfaults from use after free after the steal of ir nodes and
free of the compile context.

---

 src/glsl/ir_hv_accept.cpp |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/src/glsl/ir_hv_accept.cpp b/src/glsl/ir_hv_accept.cpp
index e772018..1a88c59 100644
--- a/src/glsl/ir_hv_accept.cpp
+++ b/src/glsl/ir_hv_accept.cpp
@@ -116,6 +116,10 @@ ir_function_signature::accept(ir_hierarchical_visitor *v)
    if (s != visit_continue)
       return (s == visit_continue_with_parent) ? visit_continue : s;
 
+   s = visit_list_elements(v, &this->parameters);
+   if (s == visit_stop)
+      return s;
+
    s = visit_list_elements(v, &this->body);
    return (s == visit_stop) ? s : v->visit_leave(this);
 }