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-rw-r--r--src/compiler/glsl/ir_clone.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/compiler/glsl/ir_clone.cpp b/src/compiler/glsl/ir_clone.cpp
index 69441fae7de..e1f4f3b2903 100644
--- a/src/compiler/glsl/ir_clone.cpp
+++ b/src/compiler/glsl/ir_clone.cpp
@@ -194,6 +194,7 @@ ir_dereference_array::clone(void *mem_ctx, struct hash_table *ht) const
ir_dereference_record *
ir_dereference_record::clone(void *mem_ctx, struct hash_table *ht) const
{
+ assert(this->field_idx >= 0);
const char *field_name =
this->record->type->fields.structure[this->field_idx].name;
return new(mem_ctx) ir_dereference_record(this->record->clone(mem_ctx, ht),