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GCC from 11 onwards defaults to -std=gnu++17 for C++ source files. We want to do the same (https://discourse.llvm.org/t/c-objc-switch-to-gnu-17-as-the-default-dialect/64360). Split RUN lines, adjust `-verify`, or add `__cplusplus < 201703L` or `-Wno-dynamic-exception-spec`, so that tests will pass regardless of gnu++14/gnu++17 default. We have a desire to mark a test compatible with multiple language standards. There are ongoing discussions how to add markers in the long term: * https://discourse.llvm.org/t/iterating-lit-run-lines/62596 * https://discourse.llvm.org/t/lit-run-a-run-line-multiple-times-with-different-replacements/64932 As a workaround in the short term, add lit substitutions `%std_cxx98-`, `%std_cxx11-14`, etc. They can be used for tests which work across multiple language standards. If a range has `n` standards, run lit multiple times, with `LIT_CLANG_STD_GROUP=0`, `LIT_CLANG_STD_GROUP=1`, etc to cover all `n` standards. Reviewed By: #clang-language-wg, aaron.ballman Differential Revision: https://reviews.llvm.org/D131464
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
// RUN: %clang_cc1 %std_cxx98-14 -w -triple=x86_64-pc-win32 -fms-compatibility -fdump-record-layouts-simple -foverride-record-layout=%S/Inputs/override-bit-field-layout.layout %s | FileCheck %s --check-prefixes=CHECK,PRE17
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// RUN: %clang_cc1 -std=c++17 -w -triple=x86_64-pc-win32 -fms-compatibility -fdump-record-layouts-simple -foverride-record-layout=%S/Inputs/override-bit-field-layout.layout %s | FileCheck %s --check-prefixes=CHECK,CXX17
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// RUN: %clang_cc1 %std_cxx20- -w -triple=x86_64-pc-win32 -fms-compatibility -fdump-record-layouts-simple -foverride-record-layout=%S/Inputs/override-bit-field-layout.layout %s | FileCheck %s --check-prefixes=CHECK,CXX20
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// PRE17: Type: struct S1
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// PRE17: FieldOffsets: [0, 11]
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struct S1 {
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short a : 3;
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short b : 5;
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};
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// CHECK: Type: struct S2
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// CHECK: FieldOffsets: [64]
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struct S2 {
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virtual ~S2() = default;
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short a : 3;
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};
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// CXX17: Type: struct S1
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// CXX17: FieldOffsets: [0, 11]
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// CXX20: Type: struct S1
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// CXX20: FieldOffsets: [0, 3]
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// CHECK: Type: struct S3
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// CHECK: Size:32
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// CHECK: FieldOffsets: [0, 1]
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struct S3 {
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int a : 1;
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int b : 2;
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};
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// CHECK: Type: struct S4
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// CHECK: FieldOffsets: [32]
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struct S4 : S3 {
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char c;
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};
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void use_structs() {
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S1 s1s[sizeof(S1)];
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S2 s2s[sizeof(S2)];
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S3 s3s[sizeof(S3)];
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S4 s4s[sizeof(S4)];
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}
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