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fix assert in __deregister_frame_info_bases

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When using the atomic fast path deregistering can fail during
program shutdown if the lookup structures are already destroyed.
The assert in __deregister_frame_info_bases takes that into
account. In the non-fast-path case however is not aware of
program shutdown, which caused a compiler error on such platforms.
We fix that by introducing a constant for in_shutdown in
non-fast-path builds.
We also drop the destructor priority, as it is not supported on
all platforms and we no longer rely upon the priority anyway.

libgcc/ChangeLog:
	* unwind-dw2-fde.c: Introduce a constant for in_shutdown
	for the non-fast-path case. Drop destructor priority.
This commit is contained in:
Thomas Neumann
2022-09-23 15:57:13 +02:00
parent 6904ed80a2
commit 386ebf75f4
1 changed files with 3 additions and 1 deletions
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4
libgcc/unwind-dw2-fde.c
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@@ -51,7 +51,7 @@ static struct btree registered_frames;
static bool in_shutdown;
static void
release_registered_frames (void) __attribute__ ((destructor (110)));
release_registered_frames (void) __attribute__ ((destructor));
static void
release_registered_frames (void)
{
@@ -67,6 +67,8 @@ static void
init_object (struct object *ob);
#else
/* Without fast path frame deregistration must always succeed. */
static const int in_shutdown = 0;
/* The unseen_objects list contains objects that have been registered
but not yet categorized in any way. The seen_objects list has had