[Mesa-dev] [PATCH] glsl: dont crash when attempting to assign a value to a builtin define

[Timothy Arceri]

For example GL_ARB_enhanced_layouts = 3;

Fixes:
GL44-CTS.enhanced_layouts.glsl_contant_immutablity
---
 src/compiler/glsl/ast_to_hir.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/glsl/ast_to_hir.cpp b/src/compiler/glsl/ast_to_hir.cpp
index d31fce9..ec83eae 100644
--- a/src/compiler/glsl/ast_to_hir.cpp
+++ b/src/compiler/glsl/ast_to_hir.cpp
@@ -806,7 +806,7 @@ validate_assignment(struct _mesa_glsl_parse_state *state,
     */
    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) {
+      if (var && var->data.mode == ir_var_shader_out && !var->data.patch) {
          ir_rvalue *index = find_innermost_array_index(lhs);
          ir_variable *index_var = index ? index->variable_referenced() : NULL;
          if (!index_var || strcmp(index_var->name, "gl_InvocationID") != 0) {
-- 
2.5.5