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libbacktrace patch committed: Replace lstat and readlink if not available


This patch to libbacktrace provides dummy versions of lstat and
readlink if they are not available on the system.  Bootstrapped and
ran libbacktrace tests on x86_64-pc-linux-gnu both normally and with a
hand-edited config.h.  Committed to mainline.

Ian

2017-09-22  Ian Lance Taylor  <iant@golang.org>

PR sanitizer/77631
* configure.ac: Check for lstat and readlink.
* elf.c (lstat, readlink): Provide dummy versions if real versions
are not available.
* configure, config.h.in: Rebuild.

Attachment: patch.txt
Description: Text document


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