[Bug]: compilation failure on HaikuOS

[xinitrcn1]

Describe the issue

Steps to reproduce the problem

cmake -DCMAKE_BUILD_TYPE=Release -Bbuild -S.
cmake --build build -- -j64

What version of Abseil are you using?

git latest

What operating system and version are you using?

HaikuOS 59199

What compiler and version are you using?

gcc 13.3.0

What build system are you using?

cmake + gnumake

Additional context

i just made it return 0; and builds fine, obviously incorrect

[upyours01969-create]

Describe the issue

### Steps to reproduce the problem cmake -DCMAKE_BUILD_TYPE=Release -Bbuild -S. cmake --build build -- -j64

What version of Abseil are you using?

git latest

What operating system and version are you using?

HaikuOS 59199

What compiler and version are you using?

gcc 13.3.0

What build system are you using?

cmake + gnumake

Additional context

i just made it return 0; and builds fine, obviously incorrect