+ } else if (earlier->data.how_declared == ir_var_declared_implicitly &&
+ state->allow_builtin_variable_redeclaration) {
+ /* Allow verbatim redeclarations of built-in variables. Not explicitly
+ * valid, but some applications do it.
+ */
+ if (earlier->data.mode != var->data.mode &&
+ !(earlier->data.mode == ir_var_system_value &&
+ var->data.mode == ir_var_shader_in)) {
+ _mesa_glsl_error(&loc, state,
+ "redeclaration of `%s' with incorrect qualifiers",
+ var->name);
+ } else if (earlier->type != var->type) {
+ _mesa_glsl_error(&loc, state,
+ "redeclaration of `%s' has incorrect type",
+ var->name);
+ }