https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102771
Bug ID: 102771
Summary: show fix-it for missing period in variadic template:
template<typename.. T>
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: enhancement
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
template<typename.. T> void f(T...) { }
vart.C:1:18: error: expected nested-name-specifier before ‘.’ token
1 | template<typename.. T> void f(T...) { }
| ^
vart.C:1:18: error: expected ‘>’ before ‘.’ token
vart.C:1:29: error: variable or field ‘f’ declared void
1 | template<typename.. T> void f(T...) { }
| ^
vart.C:1:31: error: ‘T’ was not declared in this scope
1 | template<typename.. T> void f(T...) { }
| ^
This could be improved. If we see a . token after "typename" or "class" (or
"auto"?) then instead of just giving an error, see if the next token is also
"." and if so, the user probably meant to write "..."
We should show a fix-it saying "did you mean '...'?"
