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libspl/assert: use libunwind for backtrace when available

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libunwind seems to do a better job of resolving a symbols than
backtrace(), and is also useful on platforms that don't have backtrace()
(eg musl). If it's available, use it.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Sponsored-by: https://despairlabs.com/sponsor/
Closes #16140
This commit is contained in:
Rob Norris
2024-04-30 10:37:29 +10:00
committed by Brian Behlendorf
parent 2152c405ba
commit 051460b8b2
4 changed files with 79 additions and 3 deletions
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config/user.m4
+1
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@@ -27,6 +27,7 @@ AC_DEFUN([ZFS_AC_CONFIG_USER], [
ZFS_AC_CONFIG_USER_CLOCK_GETTIME
ZFS_AC_CONFIG_USER_PAM
ZFS_AC_CONFIG_USER_BACKTRACE
ZFS_AC_CONFIG_USER_LIBUNWIND
ZFS_AC_CONFIG_USER_RUNSTATEDIR
ZFS_AC_CONFIG_USER_MAKEDEV_IN_SYSMACROS
ZFS_AC_CONFIG_USER_MAKEDEV_IN_MKDEV