| // Contributed by Dodji Seketeli <dodji@redhat.com> |
| // Origin PR debug/30161 |
| // { dg-options "-gdwarf-2 -dA -fno-merge-debug-strings" } |
| // { dg-do compile { target c++11 } } |
| |
| // There must be 5 subprograms generated: |
| // printf(const char*), printf<int, char, int>, |
| // printf<char, int>, printf<int> and foo(). |
| // { dg-final {scan-assembler-times "DIE \\(0x\[^\n\]*\\) DW_TAG_subprogram" 5 } } |
| |
| // That makes 6 template type parameters. |
| // { dg-final {scan-assembler-times "DIE \\(0x\[^\n\]*\\) DW_TAG_template_type_param" 6 } } |
| // { dg-final {scan-assembler-times "\"printf<int, char, int>.0\"\[^\n\]*DW_AT_name" 1 } } |
| // { dg-final {scan-assembler-times "\"printf<char, int>.0\"\[^\n\]*DW_AT_name" 1 } } |
| // { dg-final {scan-assembler-times "\"printf<int>.0\"\[^\n\]*DW_AT_name" 1 } } |
| // { dg-final {scan-assembler-times "\"printf.0\"\[^\n\]*DW_AT_name" 1 } } |
| |
| // printf<int, char, int> and printf<char, int> have a pack expansion as |
| // function parameters. There should then be 3 |
| // DW_TAG_GNU_template_parameter_pack and 3 DW_TAG_GNU_formal_parameter_pack DIEs |
| // { dg-final {scan-assembler-times "DIE \\(0x\[^\n\]*\\) DW_TAG_GNU_template_parameter_pack" 3 } } |
| // { dg-final {scan-assembler-times "DIE \\(0x\[^\n\]*\\) DW_TAG_GNU_formal_parameter_pack" 3 } } |
| // These 3 function template instantiations has a total of 3 template |
| // parameters named T. |
| // { dg_final {scan-assembler-times "\.ascii \"T.0\"\[\t \]+\[^\n\]*DW_AT_name" 3 } } |
| |
| |
| void |
| printf(const char* s) |
| { |
| /* Commented this to not pull std::cout into what should be |
| a simple test. |
| while (*s) |
| std::cout << *s++; |
| */ |
| } |
| |
| template<typename T, typename... PackTypes> |
| void |
| printf(const char* s, |
| T value, |
| PackTypes... args) |
| { |
| while (*s) |
| { |
| if (*s == '%' && *++s != '%') |
| { |
| /* std::cout << value; */ |
| return printf(++s, args...); |
| } |
| } |
| } |
| |
| void |
| foo () |
| { |
| int x; |
| printf("%c %d", x, 'x', 3); |
| } |