llvm-project

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// Test this without pch.
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// RUN: %clang_cc1 -D__DATE__= -D__TIMESTAMP__= -include %s -Wno-builtin-macro-redefined -fsyntax-only -verify %s
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// Test with pch.
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// RUN: %clang_cc1 -D__DATE__= -D__TIMESTAMP__= -Wno-builtin-macro-redefined -emit-pch -o %t %s
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// RUN: %clang_cc1 -D__DATE__= -D__TIMESTAMP__= -Wno-builtin-macro-redefined -include-pch %t -fsyntax-only -verify %s 
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#if !defined(HEADER)
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#define HEADER
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#define __TIME__
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#undef __TIMESTAMP__
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#define __TIMESTAMP__
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// FIXME: undefs don't work well with pchs yet, see PR31311
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// Once that's fixed, add -U__COUNTER__ to all command lines and check that
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// an attempt to use __COUNTER__ at the bottom produces an error in both non-pch
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// and pch case (works fine in the former case already).
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// Same for #undef __FILE__ right here and a use of that at the bottom.
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//#undef __FILE__
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// Also spot-check a predefine
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#undef __STDC_HOSTED__
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#else
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const char s[] = __DATE__ " " __TIME__ " " __TIMESTAMP__;
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// Check that we pick up __DATE__ from the -D flag:
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int i = __DATE__ 4;
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const int d = __STDC_HOSTED__; // expected-error{{use of undeclared identifier '__STDC_HOSTED__'}}
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#endif
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