---
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
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