diff --git a/src/compiler/glsl/ast_function.cpp b/src/compiler/glsl/ast_function.cpp
index 5cbc713e6e1..08a200347af 100644
--- a/src/compiler/glsl/ast_function.cpp
+++ b/src/compiler/glsl/ast_function.cpp
@@ -49,6 +49,10 @@ process_parameters(exec_list *instructions, exec_list *actual_parameters,
       ast->set_is_lhs(true);
       ir_rvalue *result = ast->hir(instructions, state);
 
+      /* Error happened, bail out. */
+      if (state->error)
+         return 0;
+
       ir_constant *const constant =
          result->constant_expression_value(mem_ctx);