ICE when using va_start in non-variadic function

[Temtaime]

struct ASTBase
{
    import core.stdc.stdarg;

    extern (C++) final error(const(char) *format)
    {
      va_list ap;
      va_start(ap, format);
    }
}

Compile using -march=x86 and it crashes:
Wrote crash dump file ...

[Temtaime]

It is valid code used in DMD.
You can add missing va_end and ... and it will fail.

[kinke]

Well for a proper C-style vararg declaration, it's missing a , ..., after which it obviously works.

[Temtaime]

Oh, sorry, my fault
https://github.com/dlang/dmd/blob/master/src/ddmd/astbase.d#L437
There's some shit in dmd

[dnadlinger]

We should certainly issue a nicer error message instead of crashing, though.

[kinke]

@Temtaime: Thx for fixing the upstream bug.