Compilation error in readline/input.c using MinGW

[Eli Zaretskii]

Hi,

In this message several months ago:

  https://lists.gnu.org/archive/html/bug-readline/2024-07/msg00006.html

I reported a problem compiling Readline 8.2 with MinGW, due to the
lack of the 'alarm' function.  I have now built the GDB-16.0.90
pretest, which includes Readline 8.2 with the solution suggested by
Tom Tromey, see

  https://lists.gnu.org/archive/html/bug-readline/2024-11/msg00007.html

However, that solution doesn't work with mingw.org's MinGW (it doesn't
support __USE_MINGW_ALARM), so I still need a trivial implementation
for 'alarm' to compile input.c.  In

  https://lists.gnu.org/archive/html/bug-readline/2024-11/msg00008.html

you say that "I have reports that alarm() doesn't work on mingw at
all, so the current version doesn't try to support timeouts on mingw".
Could you perhaps tell how does the current Readline code solve this
problem?  I looked at the Readline Git repository, and I still see
there that the code which calls 'alarm' gets compiled with MinGW.  Am
I looking at the wrong branch, perhaps?

Thanks.