llvm-project

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// Unsupported on AIX because we don't support the requisite "__clangast"
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// section in XCOFF yet.
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// UNSUPPORTED: target={{.*}}-aix{{.*}}
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// For GCC compatibility, clang should probe also with the .gch extension.
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// RUN: %clang -x c-header -c %s -o %t.h.gch
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// RUN: %clang -fsyntax-only -include %t.h %s
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// -gmodules embeds the Clang AST file in an object file.
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// RUN: %clang -x c-header -c %s -gmodules -o %t.h.gch
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// RUN: %clang -fsyntax-only -include %t.h %s
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// gch probing should ignore files which are not clang pch files.
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// RUN: %clang -fsyntax-only -include %S/Inputs/gch-probe.h %s 2>&1 | FileCheck %s
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// CHECK: warning: precompiled header '{{.*}}gch-probe.h.gch' was ignored because it is not a clang PCH file
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void f(void);
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