llvm-project/llvm/lib/DebugInfo
Pavel Labath c9f07b06a1 DWARFVerifier: validate information in name index entries
Summary:
This patch add checks to verify that the information in the name index
entries is consistent with the debug_info section. Specifically, we
check that entries point to valid DIEs, and their names, tags, and
compile units match the information in the debug_info sections.

These checks are only run if the previous checks did not find any errors
in the name index headers. Attempting to proceed with the checks anyway
would likely produce a lot of spurious errors and the verification code
would need to be very careful to avoid crashing.

I also add a couple of more checks to the abbreviation-validation code
to verify that some attributes are always present (an index without a
DW_IDX_die_offset attribute is fairly useless).

The entry verification works only on indexes without any type units - I
haven't attempted to extend it to type units, as we don't even have a
DWARF v5-compatible type unit generator at the moment.

Reviewers: JDevlieghere, aprantl, dblaikie

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D45323

llvm-svn: 329392
2018-04-06 13:34:12 +00:00
..
CodeView [DebugInfo] Change std::sort to llvm::sort in response to r327219 2018-04-01 16:18:49 +00:00
DWARF DWARFVerifier: validate information in name index entries 2018-04-06 13:34:12 +00:00
MSF [MSF] Default to FPM2, and always mark FPM pages allocated. 2018-03-29 18:34:15 +00:00
PDB [llvm-pdbutil] Add the ability to explain binary files. 2018-04-04 17:29:09 +00:00
Symbolize Fix build broken by r326959 2018-03-08 00:07:26 +00:00
CMakeLists.txt [msf] Resubmit "Rename Msf -> MSF". 2016-07-29 20:56:36 +00:00
LLVMBuild.txt [msf] Resubmit "Rename Msf -> MSF". 2016-07-29 20:56:36 +00:00