1 files changed, 13 insertions, 0 deletions
diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index 308b7c2010d..1f5e2ebdcb7 100644
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -192,8 +192,21 @@ ir_assignment::ir_assignment(ir_rvalue *lhs, ir_rvalue *rhs,
 
 
 ir_expression::ir_expression(int op, const struct glsl_type *type,
+			     ir_rvalue *op0)
+{
+   assert(get_num_operands(ir_expression_operation(op)) == 1);
+   this->ir_type = ir_type_expression;
+   this->type = type;
+   this->operation = ir_expression_operation(op);
+   this->operands[0] = op0;
+   this->operands[1] = NULL;
+}
+
+ir_expression::ir_expression(int op, const struct glsl_type *type,
 			     ir_rvalue *op0, ir_rvalue *op1)
 {
+   assert((op1 == NULL) && (get_num_operands(ir_expression_operation(op)) == 1)
+	  || (get_num_operands(ir_expression_operation(op)) == 2));
    this->ir_type = ir_type_expression;
    this->type = type;
    this->operation = ir_expression_operation(op);