Re: c: tree: target: C2x (...) function prototypes and va_start relaxation

[Eric Botcazou via Gcc-patches]

> And also:
> 
> FAIL: gcc.dg/torture/c2x-stdarg-split-1a.c   -O0  execution test
> FAIL: gcc.dg/torture/c2x-stdarg-split-1a.c   -O1  execution test
> FAIL: gcc.dg/torture/c2x-stdarg-split-1a.c   -O2  execution test
> FAIL: gcc.dg/torture/c2x-stdarg-split-1a.c   -O3 -g  execution test
> FAIL: gcc.dg/torture/c2x-stdarg-split-1a.c   -Os  execution test
> FAIL: gcc.dg/torture/c2x-stdarg-split-1a.c   -O2 -flto
> -fno-use-linker-plugin -flto-partition=none  execution test FAIL:
> gcc.dg/torture/c2x-stdarg-split-1a.c   -O2 -flto -fuse-linker-plugin
> -fno-fat-lto-objects  execution test

The implementation does not work on some targets, see PR target/107453.

-- 
Eric Botcazou