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Re: Removal of unexec support from glibc malloc

From: Richard Stallman
Subject: Re: Removal of unexec support from glibc malloc
Date: Sat, 23 Jan 2016 17:52:30 -0500

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  > AFAICS, it happens due to the following:

  >   . We call regex.c functions, which reuse an allocated buffer,
  >     extending it (via realloc) as needed; that buffer gets frozen with
  >     malloc arena used during dumping

  >   . We delete the terminal frame used by temacs and free its resources

  >   . Not 100% sure, but I think we also release/reallocate some
  >     font-related stuff

  > It's easy to catch all those cases by setting a breakpoint on realloc
  > and free during startup.

It may be a pain to fix them if they happen inside libraries.

Dr Richard Stallman
President, Free Software Foundation (gnu.org, fsf.org)
Internet Hall-of-Famer (internethalloffame.org)
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