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With xlc and xlC pragma align(packed) will pack bitfields the same way as pragma align(bit_packed). xlclang, xlclang++ and clang will pack bitfields the same way as pragma pack(1). Issue a warning when source code using pragma align(packed) is used to alert the user it may not be compatable with xlc/xlC. Differential Revision: https://reviews.llvm.org/D107506
32 lines
682 B
C
32 lines
682 B
C
// RUN: %clang_cc1 -triple powerpc64-ibm-aix-xcoff -fxl-pragma-pack -verify -fsyntax-only %s
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// RUN: %clang_cc1 -triple powerpc-ibm-aix-xcoff -fxl-pragma-pack -verify -fsyntax-only %s
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#pragma align(packed)
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struct A { // expected-warning {{#pragma align(packed) may not be compatible with objects generated with AIX XL C/C++}}
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short s1;
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int : 0;
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short s2;
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};
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struct B { // expected-warning {{#pragma align(packed) may not be compatible with objects generated with AIX XL C/C++}}
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short a : 8;
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short b : 8;
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int c;
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};
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struct C {
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int x, y, z;
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};
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struct D {
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double d;
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struct A a;
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};
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#pragma align(reset)
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struct E {
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int a : 28;
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int : 0;
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int b : 16;
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};
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