On 06/27/2016 03:42 PM, Matt Turner wrote:
---
  src/compiler/glsl/ir_constant_expression.cpp    | 11 +++--------
  src/compiler/glsl/link_uniform_initializers.cpp |  3 +--
  2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/src/compiler/glsl/ir_constant_expression.cpp 
b/src/compiler/glsl/ir_constant_expression.cpp
index e79d5ef..7c6a17d 100644
--- a/src/compiler/glsl/ir_constant_expression.cpp
+++ b/src/compiler/glsl/ir_constant_expression.cpp
@@ -1573,18 +1573,13 @@ ir_expression::constant_expression_value(struct 
hash_table *variable_context)
           data.f[c] = CLAMP(op[0]->value.f[c], 0.0f, 1.0f);
        }
        break;
-   case ir_unop_pack_double_2x32: {
+   case ir_unop_pack_double_2x32:
        /* XXX needs to be checked on big-endian */
-      uint64_t temp;
-      temp = (uint64_t)op[0]->value.u[0] | ((uint64_t)op[0]->value.u[1] << 32);
-      data.d[0] = *(double *)&temp;
-
+      memcpy(&data.d[0], &op[0]->value.u[0], sizeof(double));
        break;
-   }
     case ir_unop_unpack_double_2x32:
        /* XXX needs to be checked on big-endian */
-      data.u[0] = *(uint32_t *)&op[0]->value.d[0];
-      data.u[1] = *((uint32_t *)&op[0]->value.d[0] + 1);
+      memcpy(&data.u[0], &op[0]->value.d[0], sizeof(double));
        break;

     case ir_triop_bitfield_extract: {
diff --git a/src/compiler/glsl/link_uniform_initializers.cpp 
b/src/compiler/glsl/link_uniform_initializers.cpp
index acf8222..98a2397 100644
--- a/src/compiler/glsl/link_uniform_initializers.cpp
+++ b/src/compiler/glsl/link_uniform_initializers.cpp
@@ -65,8 +65,7 @@ copy_constant_to_storage(union gl_constant_value *storage,
         break;
        case GLSL_TYPE_DOUBLE:
           /* XXX need to check on big-endian */
-         storage[i * 2].u = *(uint32_t *)&val->value.d[i];
-         storage[i * 2 + 1].u = *(((uint32_t *)&val->value.d[i]) + 1);
+         memcpy(&storage[i * 2].u, &val->value.d[i], sizeof(double));
           break;
        case GLSL_TYPE_BOOL:
         storage[i].b = val->value.b[i] ? boolean_true : 0;


For 2-7, Reviewed-by: Brian Paul <bri...@vmware.com>

Though, in patch 6, as long as you're there, I wonder if we should use parenthesized (offset) in the macro bodies, just to be safe.

-Brian

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