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-rw-r--r--src/glsl/ir_constant_expression.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index f15530ae89e..6a07f4e1895 100644
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -676,6 +676,10 @@ ir_swizzle::constant_expression_value()
ir_constant *
ir_dereference_variable::constant_expression_value()
{
+ /* This may occur during compile and var->type is glsl_type::error_type */
+ if (!var)
+ return NULL;
+
return var->constant_value ? var->constant_value->clone(NULL) : NULL;
}