Mesa (master): glsl/tests: Fix strict aliasing warning about int64/double.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 21670f820812238dbe3fb18ab90493999b7e718e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=21670f820812238dbe3fb18ab90493999b7e718e

Author: Eric Anholt <eric at anholt.net>
Date:   Sat Feb 10 11:01:20 2018 +0000

glsl/tests: Fix strict aliasing warning about int64/double.

Fixes: 4bf986274728 ("glsl/tests: Add UINT64 and INT64 types")
Reviewed-by: Rhys Kidd <rhyskidd at gmail.com>

---

 .../glsl/tests/uniform_initializer_utils.cpp       | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/compiler/glsl/tests/uniform_initializer_utils.cpp b/src/compiler/glsl/tests/uniform_initializer_utils.cpp
index c5502b6326..a1c68c8272 100644
--- a/src/compiler/glsl/tests/uniform_initializer_utils.cpp
+++ b/src/compiler/glsl/tests/uniform_initializer_utils.cpp
@@ -198,6 +198,22 @@ generate_array_data(void *mem_ctx, enum glsl_base_type base_type,
    val = new(mem_ctx) ir_constant(array_type, &values_for_array);
 }
 
+static uint64_t
+uint64_storage(union gl_constant_value *storage)
+{
+   uint64_t val;
+   memcpy(&val, &storage->i, sizeof(uint64_t));
+   return val;
+}
+
+static uint64_t
+double_storage(union gl_constant_value *storage)
+{
+   double val;
+   memcpy(&val, &storage->i, sizeof(double));
+   return val;
+}
+
 /**
  * Verify that the data stored for the uniform matches the initializer
  *
@@ -246,13 +262,13 @@ verify_data(gl_constant_value *storage, unsigned storage_array_size,
 	    EXPECT_EQ(val->value.b[i] ? boolean_true : 0, storage[i].i);
 	    break;
 	 case GLSL_TYPE_DOUBLE:
-	    EXPECT_EQ(val->value.d[i], *(double *)&storage[i*2].i);
+	    EXPECT_EQ(val->value.d[i], double_storage(&storage[i*2]));
 	    break;
 	 case GLSL_TYPE_UINT64:
-	    EXPECT_EQ(val->value.u64[i], *(uint64_t *)&storage[i*2].i);
+            EXPECT_EQ(val->value.u64[i], uint64_storage(&storage[i*2]));
 	    break;
 	 case GLSL_TYPE_INT64:
-	    EXPECT_EQ(val->value.i64[i], *(int64_t *)&storage[i*2].i);
+	    EXPECT_EQ(val->value.i64[i], uint64_storage(&storage[i*2]));
 	    break;
          case GLSL_TYPE_ATOMIC_UINT:
 	 case GLSL_TYPE_STRUCT: