[Bug c/91046] missing warning about empty translation unit

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91046

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |egallager at gcc dot gnu.org

--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
gcc warns for me:

$ echo "" >> empty.c
$ /usr/local/bin/gcc -c -Wall -Wextra -pedantic empty.c
empty.c:1: warning: ISO C forbids an empty translation unit [-Wpedantic]
    1 | 
      | 
$

For comparison, clang puts this under its own separate flag: 

$ clang -c -Wall -Wextra -pedantic empty.c
empty.c:1:1: warning: ISO C requires a translation unit to contain at least one
declaration [-Wempty-translation-unit]
^
1 warning generated.
$

So maybe it's worth splitting -Wempty-translation-unit off from -Wpedantic in
gcc too, so it's separately controllable?