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glsl: Fix segfault when lhs is error_type in TCS

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It seems expected that both lhs and rhs could be of type error_type
in this code however the TCS case wasn't expecting it.

Fixes segfault in an enhanced layouts GL CTS test.

Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Timothy Arceri 2016-03-09 16:58:29 +11:00
parent c9367c13ca
commit 7ebc3deaad
1 changed files with 1 additions and 1 deletions
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2
src/compiler/glsl/ast_to_hir.cpp
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@ -819,7 +819,7 @@ validate_assignment(struct _mesa_glsl_parse_state *state,
* if the expression indicating the vertex number is not the identifier
* `gl_InvocationID`.
*/
if (state->stage == MESA_SHADER_TESS_CTRL) {
if (state->stage == MESA_SHADER_TESS_CTRL && !lhs->type->is_error()) {
ir_variable *var = lhs->variable_referenced();
if (var->data.mode == ir_var_shader_out && !var->data.patch) {
ir_rvalue *index = find_innermost_array_index(lhs);