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d6d59e660b
Currently the implementation of __VA_OPT__ will treat the concatenation of a non-placemaker token and placemaker token as a placemaker token which is not correct. This will fix the implementation and treat the result as a non-placemaker token. This fixes: https://github.com/llvm/llvm-project/issues/60268 Differential Revision: https://reviews.llvm.org/D142604
37 lines
747 B
C++
37 lines
747 B
C++
RUN: %clang_cc1 -E %s -pedantic -std=c++2a | FileCheck -strict-whitespace %s
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#define LPAREN() (
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#define G(Q) 42
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#define F1(R, X, ...) __VA_OPT__(G R X) )
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1: int x = F1(LPAREN(), 0, <:-);
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// CHECK: 1: int x = 42;
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#define F2(...) f(0 __VA_OPT__(,) __VA_ARGS__)
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#define EMP
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2: F2(EMP)
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// CHECK: 2: f(0 )
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#define H3(X, ...) #__VA_OPT__(X##X X##X)
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3: H3(, 0)
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// CHECK: 3: ""
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#define H4(X, ...) __VA_OPT__(a X ## X) ## b
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4: H4(, 1)
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// CHECK: 4: a b
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#define H4B(X, ...) a ## __VA_OPT__(X ## X b)
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4B: H4B(, 1)
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// CHECK: 4B: a b
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#define H5A(...) __VA_OPT__()/**/__VA_OPT__()
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#define H5B(X) a ## X ## b
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#define H5C(X) H5B(X)
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5: H5C(H5A())
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// CHECK: 5: ab
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namespace GH60268 {
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#define H6(X, ...) __VA_OPT__(a ## X) ## b
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6: H6(, 1);
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// CHECK: 6: ab
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}
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