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Message-ID: <CAOUYtQAaD4RoSkS56=hsF7CBaAYc3CP1mE3P7NBinY0KfuggLg@mail.gmail.com>
Date: Sat, 18 Feb 2023 12:17:03 +0000
From: Jon Chesterfield <jonathanchesterfield@...il.com>
To: musl@...ts.openwall.com
Subject: Re: [PATCH] Use __builtin_FILE/__builtin_LINE if available
On Sat, 18 Feb 2023, 02:54 Fangrui Song, <i@...kray.me> wrote:
On Fri, Feb 17, 2023 at 6:03 PM Rich Felker <dalias@...c.org> wrote:
>
> On Fri, Feb 17, 2023 at 05:33:33PM -0800, Fangrui Song wrote:
> > C++ inline functions are requred to have exact same sequence of tokens
> > in every translation unit, but __FILE__ and __LINE__ may expand to
> > different tokens. The ODR violatioin is usually benign, but it can lead
> > to errors when C++20 modules are used.
It is sad that C++ modules broke 'assert' but not surprising. Modules were
largely created out of aversion to macros. This isn't something libc can
fix though, I suggest a defect report against C++ instead.
Changing the semantics of assert in C seems like a bad thing to do.
Thanks
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