| /* { dg-do preprocess } */ |
| /* { dg-options "-std=gnu99" { target c } } */ |
| /* { dg-options "-std=c++20" { target c++ } } */ |
| |
| #define a "" |
| #define b(...) a ## #__VA_OPT__(1) /* { dg-error "pasting 'a' and '\"\"' does not give a valid preprocessing token" } */ |
| #define c(...) a ## #__VA_OPT__(1) /* { dg-error "pasting 'a' and '\"1\"' does not give a valid preprocessing token" } */ |
| #define d(...) #__VA_OPT__(1) ## ! |
| #define e(...) #__VA_OPT__(1) ## ! |
| #define f(...) #__VA_OPT__(. ## !) |
| #define g(...) #__VA_OPT__(. ## !) |
| b() |
| c(1) |
| d( ) /* { dg-error "pasting '\"\"' and '!' does not give a valid preprocessing token" } */ |
| e( 1 ) /* { dg-error "pasting '\"1\"' and '!' does not give a valid preprocessing token" } */ |
| f() |
| g(0) /* { dg-error "pasting '.' and '!' does not give a valid preprocessing token" } */ |
