Revert r360445

I did not intend to commit this yet as more work is needed for
non-amd64 kernels.

ctfmerge: Assert that there is enough room for types.

Sponsord by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D24537

Fix handling of forward enum declarations in the CTF tools.

Reported by: mmacy
MFC after: 2 weeks

Remove a dead local variable, missed in r274565.

MFC after: 3 days
Sponsored by: EMC / Isilon Storage Division

Re-apply r274569. It was reverted in r276848 since that appeared to fix
some ctfmerge crashes that started to occur on i386 weeks after r274569 was
committed. Some later investigation indicated that

Re-apply r274569. It was reverted in r276848 since that appeared to fix
some ctfmerge crashes that started to occur on i386 weeks after r274569 was
committed. Some later investigation indicated that the crashes were caused
by malformed CTF info that led to a stack overflow. The issue with CTF
info in i386 kernels seems to have been resolved by r261246, which updated
libdwarf and libelf.

r274569 fixes a bug which caused duplicate types to appear in the kernel's
CTF info. This duplication generally does not cause problems when using
DTrace, but makes it easier to hit the limit of 2^15 - 1 distinct type
definitions in a CTF container.

MFC after: 2 weeks

show more ...

Revert r274569. It seems to be causing a crash when merging CTF data for
recent i386 GENERIC kernels.

Reported by: David Wolfskill

Only compare visitation counters if they've both been set for the current
type graph walk.

Reviewed by: Robert Mustacchi <rm@joyent.com>
MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Division

Remove an incorrect optimization. The type IDs of each member of a struct or
union must be checked when determine whether two types are equivalent. This
bug could cause ctfmerge(1) to incorrectly mer

Remove an incorrect optimization. The type IDs of each member of a struct or
union must be checked when determine whether two types are equivalent. This
bug could cause ctfmerge(1) to incorrectly merge distinct types.

Reviewed by: Robert Mustacchi <rm@joyent.com>
MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Division

show more ...

A lot of changes to make this code compile cleanly on FreeBSD.

This commit was generated by cvs2svn to compensate for changes in r178528,
which included commits to RCS files with non-trunk default branches.

This commit was generated by cvs2svn to compensate for changes in r178481,
which included commits to RCS files with non-trunk default branches.