I.e. -m32 or -m64
@WalterBright created dlang/dmd pull request #14259 "fix Issue 23224 - ImportC: memory model switch is not passed to C pre…" fixing this issue: - fix Issue 23224 - ImportC: memory model switch is not passed to C preprocessor https://github.com/dlang/dmd/pull/14259
dlang/dmd pull request #14259 "fix Issue 23224 - ImportC: memory model switch is not passed to C pre…" was merged into master: - 755f751e4b974d8cef92cf1b448723c451894d86 by Walter Bright: fix Issue 23224 - ImportC: memory model switch is not passed to C preprocessor https://github.com/dlang/dmd/pull/14259