Date: Sun, 21 Sep 2014 11:16:13 +0100 From: Justin Cormack <justin@...cialbusservice.com> To: musl@...ts.openwall.com Subject: Re: LUA + musl, garbage collection issue? On Sun, Sep 21, 2014 at 5:38 AM, Rich Felker <dalias@...c.org> wrote: > On Sat, Sep 20, 2014 at 04:41:14PM -1000, Scott Valentine wrote: >> I noticed that in order to free memory, it basically calls realloc >> with 0 as the new size. Is this something musl doesn't handle well? >> >> I'm trying a rebuild with a check for n == 0 in musl's realloc >> function to just free the pointer, and I'll report back. >> >> What is "the right thing to do" to fix this? Should lua not be using >> realloc to free memory, or should musl handle the case better, if, >> in fact this is the problem? > > This is a bug in lua; it's depending on a bug in glibc. POSIX attempts As pointed out on lua-l but not copied here, Lua is not doing this, it does call free() in the 0 case, so something else is the issue... (openwrt does use a patched Lua, might be worth testing with upstream). Justin
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