[Mesa-dev] [PATCH] glsl: Clean up warnings about deleting classes without virtual destructors.

[Eric Anholt]

---
 src/glsl/ir.h |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index 9c7961a..9f8698c 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -89,6 +89,16 @@ class ir_instruction : public exec_node {
 public:
    enum ir_node_type ir_type;
 
+   /**
+    * GCC 4.7+ and clang warn when deleting an ir_instruction unless
+    * there's a virtual destructor present.  Because we almost
+    * universally use ralloc for our memory management of
+    * ir_instructions, the destructor doesn't need to do any work.
+    */
+   virtual ~ir_instruction()
+   {
+   }
+
    /** ir_print_visitor helper for debugging. */
    void print(void) const;
 
-- 
1.7.10