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