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af971365a2
C++20 and later allow you to pass no argument for the ... parameter in a variadic macro, whereas earlier language modes and C disallow it. We no longer diagnose in C++20 and later modes. This fixes PR51609.
13 lines
606 B
C++
13 lines
606 B
C++
// RUN: %clang_cc1 -Eonly -std=c++17 -pedantic -verify %s
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// RUN: %clang_cc1 -Eonly -std=c17 -pedantic -verify -x c %s
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// RUN: %clang_cc1 -Eonly -std=c++20 -pedantic -Wpre-c++20-compat -verify=compat %s
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#define FOO(x, ...) // expected-note {{macro 'FOO' defined here}} \
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// compat-note {{macro 'FOO' defined here}}
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int main() {
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FOO(42) // expected-warning {{must specify at least one argument for '...' parameter of variadic macro}} \
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// compat-warning {{passing no argument for the '...' parameter of a variadic macro is incompatible with C++ standards before C++20}}
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}
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