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comparison clang/test/Preprocessor/_Pragma-in-macro-arg.cpp @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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147:c2174574ed3a 150:1d019706d866
1 // RUN: %clang_cc1 %s -verify -Wconversion
2
3 #define P(X) _Pragma(#X)
4 #define V(X) X
5
6 #define X \
7 P(clang diagnostic push) \
8 P(clang diagnostic ignored "-Wconversion") \
9 ) = 1.2; \
10 P(clang diagnostic pop)
11
12 void f() {
13 int a = 1.2; // expected-warning {{changes value}}
14
15 // Note, we intentionally enter a tentatively-parsed context here to trigger
16 // regular use of lookahead. This would go wrong if _Pragma checking in macro
17 // argument pre-expansion also tries to use token lookahead.
18 int (b
19 V(X)
20
21 int c = 1.2; // expected-warning {{changes value}}
22 }