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[Bug malloc/24903] malloc/tst-mxfast fails on i386
- From: "carlos at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Thu, 15 Aug 2019 13:33:39 +0000
- Subject: [Bug malloc/24903] malloc/tst-mxfast fails on i386
- Auto-submitted: auto-generated
- References: <bug-24903-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=24903
Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Florian Weimer from comment #1)
> This looks related to bug 24906 due to the way set_max_fast is defined:
>
> #define set_max_fast(s) \
> global_max_fast = (((s) == 0) \
> ? SMALLBIN_WIDTH : ((s + SIZE_SZ) & ~MALLOC_ALIGN_MASK))
>
> On i386, set_max_fast (0) does not actually disable fastbins, I think.
It should always set things to a smallbin width that is smaller than the
allowed smallbin width. If it doesn't then it's a bug in the i686 support.
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