[Bug libc/13276] assertation failure in realloc when running out of virtual mappings

[bugdal at aerifal dot cx]

http://sourceware.org/bugzilla/show_bug.cgi?id=13276

--- Comment #4 from Rich Felker <bugdal at aerifal dot cx> 2011-10-08 20:01:30 UTC ---
I can't reproduce the failure for realloc (calling realloc to resize a
mmap-sized block down to size 1 results in mremap to PAGE_SIZE rather than
servicing it from the heap), but I was able to reproduce it with free instead
of realloc. Test case is attached.

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