Date: Mon, 28 May 2018 18:16:50 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: dl_iterate_phdr() behaves differently on musl and glibc On Mon, May 28, 2018 at 11:39:59PM +0200, Bob B. wrote: > > Is there a reason musl's behavior is problematic here? Even without > > the ambiguity I'd be hesitant to change it since programs may be > > relying on it. > > Looking around I found that it caused confusion with libwhich (a program like `which` for dynamic libraries). > There's an issue opened about it working differently on musl then it does on other systems. > But I wonder if it causes any problems... > > Looking at the code, it looks like Apple systems do the same thing as musl and they treated it individually by skipping the first program on the report (itself) Rather than special-casing knowledge of particular systems I think the code should just be fixed so that it doesn't break if the main program is included. > Might be worth checking what other systems do (BSDs especially I think) before making the decision. > > A clarification on POSIX should also take place. Is that a too bureaucratic process? POSIX is not relevant since this interface is not defined by POSIX. I'm rather surprised Apple has it either since it's pretty ELF-specific... Rich
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