diff options
author | Jacques Lucke <jacques@blender.org> | 2020-06-30 16:58:14 +0300 |
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committer | Jacques Lucke <jacques@blender.org> | 2020-06-30 16:58:29 +0300 |
commit | 37820651bb4f22e316f00a02e4bf5da2589a03c9 (patch) | |
tree | d5a720582e58c151c61a09304f5b354516283899 /tests/gtests/blenlib | |
parent | 5b03f49302a39577f2373906cfba19feebfaa9ba (diff) |
BLI: add Array constructor that does not initialize non-trivial types
This should rarely be necessary, but I have a use case coming up soon.
Diffstat (limited to 'tests/gtests/blenlib')
-rw-r--r-- | tests/gtests/blenlib/BLI_array_test.cc | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/tests/gtests/blenlib/BLI_array_test.cc b/tests/gtests/blenlib/BLI_array_test.cc index 9ff4dc9a371..08f61a19900 100644 --- a/tests/gtests/blenlib/BLI_array_test.cc +++ b/tests/gtests/blenlib/BLI_array_test.cc @@ -124,3 +124,38 @@ TEST(array, TrivialTypeSizeConstructor) EXPECT_EQ(*ptr, magic); delete array; } + +struct ConstructibleType { + char value; + + ConstructibleType() + { + value = 42; + } +}; + +TEST(array, NoInitializationSizeConstructor) +{ + using MyArray = Array<ConstructibleType>; + + AlignedBuffer<sizeof(MyArray), alignof(MyArray)> buffer; + char *buffer_ptr = (char *)buffer.ptr(); + memset(buffer_ptr, 100, sizeof(MyArray)); + + /* Doing this to avoid some compiler optimization. */ + for (uint i : IndexRange(sizeof(MyArray))) { + EXPECT_EQ(buffer_ptr[i], 100); + } + + { + MyArray &array = *new (buffer.ptr()) MyArray(1, NoInitialization()); + EXPECT_EQ(array[0].value, 100); + array.clear_without_destruct(); + array.~Array(); + } + { + MyArray &array = *new (buffer.ptr()) MyArray(1); + EXPECT_EQ(array[0].value, 42); + array.~Array(); + } +} |