Fix a crash from character type confusion interaction with libedit (#75388)

If you type `settings show <tab>` LLDB might crash, depending on the
version of libedit you're compiled with, and whether you're compiled
with `-DLLDB_EDITLINE_USE_WCHAR=0` (and depending on how the optimizer
lays out the stack...)

The issue has to do with trying to figure out whether the libedit
`getchar` callback is supposed to read a wide or 8 bit character. In
order to maintain backward compatibility, there's really no 'clean' way
to do it. We just have to make sure that we're invoking el_[w]getc with
a buffer that is as wide as the getchar callback (registered by the
`SetGetCharacterFunction` function further down in `Editline.cpp`.

So, it's 'fixed' with a comment, and a wider version of the 'reply'
variable.

Co-authored-by: Kevin Frei <freik@meta.com>

0 files changed, 0 insertions, 0 deletions