9797b5fcfb
Use declaresSameEntity when evaluating constexpr to avoid resetting computed union value due to using different instances of the merged field decl.
45 lines
973 B
C++
45 lines
973 B
C++
// RUN: rm -fR %t
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// RUN: split-file %s %t
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// RUN: cd %t
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// RUN: %clang_cc1 -verify -w -std=c++20 -fmodule-name=h1.h -emit-header-unit -xc++-user-header h1.h -o h1.pcm
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// RUN: %clang_cc1 -verify -w -std=c++20 -fmodule-map-file=module.modulemap -fmodule-file=h1.h=h1.pcm main.cpp -o main.o
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//--- module.modulemap
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module "h1.h" {
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header "h1.h"
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export *
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}
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//--- h0.h
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// expected-no-diagnostics
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#pragma once
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template <typename T> struct A {
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union {
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struct {
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T x, y, z;
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};
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};
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constexpr A(T, T, T) : x(), y(), z() {}
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};
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typedef A<float> packed_vec3;
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//--- h1.h
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// expected-no-diagnostics
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#pragma once
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#include "h0.h"
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constexpr packed_vec3 kMessThingsUp = packed_vec3(5.0f, 5.0f, 5.0f);
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//--- main.cpp
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// expected-no-diagnostics
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#include "h0.h"
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static_assert(sizeof(packed_vec3) == sizeof(float) * 3);
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static_assert(alignof(packed_vec3) == sizeof(float));
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import "h1.h";
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constexpr packed_vec3 kDefaultHalfExtents = packed_vec3(5.0f, 5.0f, 5.0f);
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