[Mesa-stable] [PATCH 2/4] glsl: Use signed array index in update_max_array_access()

[Anuj Phogat]

Avoids a crash in case of negative array index is used in a
shader program.

Cc: <mesa-stable at lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/glsl/ast_array_index.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/glsl/ast_array_index.cpp b/src/glsl/ast_array_index.cpp
index 5ca85f6..299ec91 100644
--- a/src/glsl/ast_array_index.cpp
+++ b/src/glsl/ast_array_index.cpp
@@ -49,12 +49,12 @@ ast_array_specifier::print(void) const
  * loc and state to report the error.
  */
 static void
-update_max_array_access(ir_rvalue *ir, unsigned idx, YYLTYPE *loc,
+update_max_array_access(ir_rvalue *ir, int idx, YYLTYPE *loc,
                         struct _mesa_glsl_parse_state *state)
 {
    if (ir_dereference_variable *deref_var = ir->as_dereference_variable()) {
       ir_variable *var = deref_var->var;
-      if (idx > var->data.max_array_access) {
+      if (idx > (int)var->data.max_array_access) {
          var->data.max_array_access = idx;
 
          /* Check whether this access will, as a side effect, implicitly cause
@@ -88,7 +88,7 @@ update_max_array_access(ir_rvalue *ir, unsigned idx, YYLTYPE *loc,
             unsigned field_index =
                deref_record->record->type->field_index(deref_record->field);
             assert(field_index < interface_type->length);
-            if (idx > deref_var->var->max_ifc_array_access[field_index]) {
+            if (idx > (int)deref_var->var->max_ifc_array_access[field_index]) {
                deref_var->var->max_ifc_array_access[field_index] = idx;
 
                /* Check whether this access will, as a side effect, implicitly
-- 
1.9.3