xref: /aosp_15_r20/external/clang/test/PCH/cxx-variadic-templates-with-default-params.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // Test this without pch.
2*67e74705SXin Li // RUN: %clang_cc1 -std=c++11 -include %s -fsyntax-only -verify %s
3*67e74705SXin Li 
4*67e74705SXin Li // Test with pch.
5*67e74705SXin Li // RUN: %clang_cc1 -std=c++11 -x c++-header -emit-pch -o %t %s
6*67e74705SXin Li // RUN: %clang_cc1 -std=c++11 -include-pch %t -fsyntax-only -verify %s
7*67e74705SXin Li 
8*67e74705SXin Li // expected-no-diagnostics
9*67e74705SXin Li 
10*67e74705SXin Li // PR25271: Ensure that default template arguments prior to a parameter pack
11*67e74705SXin Li // successfully round-trip.
12*67e74705SXin Li #ifndef HEADER
13*67e74705SXin Li #define HEADER
14*67e74705SXin Li template<unsigned T=123, unsigned... U>
15*67e74705SXin Li class dummy;
16*67e74705SXin Li 
17*67e74705SXin Li template<unsigned T, unsigned... U>
18*67e74705SXin Li class dummy {
19*67e74705SXin Li     int field[T];
20*67e74705SXin Li };
21*67e74705SXin Li #else
f()22*67e74705SXin Li void f() {
23*67e74705SXin Li     dummy<> x;
24*67e74705SXin Li     (void)x;
25*67e74705SXin Li }
26*67e74705SXin Li #endif
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