https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78679
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-25
CC| |egallager at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
There's a -Wunused-variable warning at least:
$ /usr/local/bin/g++ -c -Wall -Wextra -pedantic 78679.cc
78679.cc: In function ‘int main()’:
78679.cc:3:7: warning: unused variable ‘a’ [-Wunused-variable]
auto a = 6 + ".txt";
^
$
...and once you try to do anything with 'a' to use it to silence the
-Wunused-variable warning, it quickly turns into other issues:
$ /usr/local/bin/g++ -c -Wall -Wextra -pedantic 78679.cc
78679.cc: In function ‘int main()’:
78679.cc:4:9: error: invalid conversion from ‘const char*’ to ‘int’
[-fpermissive]
return a;
^
$
So I guess confirmed that g++ could warn earlier about the addition, too, to
prevent it from leading to further issues. Might be related to requests for a
-Wstring-plus-int, but in reverse order.
