Hi,

On 08/14/2018 10:43 AM, Tapani Pälli wrote:


On 08/13/2018 08:54 PM, Ian Romanick wrote:
On 08/13/2018 08:57 AM, Danylo Piliaiev wrote:
Accessing scalar constant as an array in function call or
initializer list triggered assert in get_array_element.
Examples:
    func(0[0]);
    vec2 t = { 0[0], 0 };

Do we have tests like this in piglit?  What happens if 0[0] syntax is
used other places?  What do happens in these cases after this change?
Some sort of graceful compile-time error, I hope...

In other places we already fail with the same error ("cannot dereference non-array / non-matrix / non-vector").
I've sent a glslparsertest for this. With the change we fail compilation in this case like:

0:8(9): error: cannot dereference non-array / non-matrix / non-vector
0:8(2): error: no function with name 'func'

Thanks for the test.

- Danil

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107550

Signed-off-by: Danylo Piliaiev <danylo.pilia...@globallogic.com>
---
  src/compiler/glsl/ir_constant_expression.cpp | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/glsl/ir_constant_expression.cpp b/src/compiler/glsl/ir_constant_expression.cpp
index 4a0aff72c6..c9788c7053 100644
--- a/src/compiler/glsl/ir_constant_expression.cpp
+++ b/src/compiler/glsl/ir_constant_expression.cpp
@@ -826,7 +826,7 @@ ir_dereference_array::constant_expression_value(void *mem_ctx,
           const unsigned component = idx->value.u[0];
             return new(mem_ctx) ir_constant(array, component);
-      } else {
+      } else if (array->type->is_array()) {
           const unsigned index = idx->value.u[0];
           return array->get_array_element(index)->clone(mem_ctx, NULL);
        }
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