8b0d112478
Fixs https://github.com/llvm/llvm-project/issues/145240. The UCN in preprocessor pasted identifier not resolved to unicode, it may cause the following issue: ```c #define CAT(a,b) a##b char foo\u00b5; char*p = &CAT(foo, \u00b5); // error: use of undeclared identifier 'foo\u00b5' ``` The real identifier after paste is `fooµ`. This PR fix this issue in `TokenLexer::pasteTokens`, if there has any UCN in pasting tokens, the final pasted token should have a Token::HasUCN flag. Then `Preprocessor::LookUpIdentifierInfo` will expand UCNs in this token. Signed-off-by: yronglin <yronglin777@gmail.com>
11 lines
251 B
C
11 lines
251 B
C
// RUN: %clang_cc1 -fms-extensions %s -verify
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// RUN: %clang_cc1 -E -fms-extensions %s | FileCheck %s
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// expected-no-diagnostics
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#define CAT(a,b) a##b
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char foo\u00b5;
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char*p = &CAT(foo, \u00b5);
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// CHECK: char fooµ;
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// CHECK-NEXT: char*p = &fooµ;
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