[Bug corefiles/34555] gdb memory exhaustion on gdb.base/many-headers.exp

https://sourceware.org/bugzilla/show_bug.cgi?id=34555

--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
In hindsight, the cause of the difference is pretty obvious.  The actual
mappings
are just 100 bytes.  However, Solaris stores a whole page in the core file.

                pagesize        core size       factor          on-disk size

  amd64         4096            425760020       103945 * ps     4933 kb
  sparcv9       8192            834708857       101893 * ps     4176 kb
  x86_64        4096             11530304       115303 * 100    2110 kb

The files themselves are sparse, so the difference doesn't matter for disk
space consumption.

However, gdb consuming (way more than?) 10 times the core size to read it
seems completely excessive.

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