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Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder

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This will be used to consolidate the libgcc_s access for backtrace
and pthread_cancel.

Unlike the existing backtrace implementations, it provides some
hardening based on pointer mangling.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2021-03-01 15:56:36 +01:00
parent 764e9a0334
commit 9fc813e1a3
20 changed files with 600 additions and 18 deletions
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debug/backtrace.c
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@ -23,7 +23,7 @@
#include <gnu/lib-names.h>
#include <stdlib.h>
#include <unwind.h>
#include <unwind-arch.h>
#include <unwind-link.h>
struct trace_arg
{