[Lldb-commits] [PATCH] D55859: noexternal 2/2: symbols.enable-external-lookup=false on all hosts (not just OSX)

Jan Kratochvil via Phabricator via lldb-commits lldb-commits at lists.llvm.org
Tue Dec 18 15:22:27 PST 2018

jankratochvil created this revision.
jankratochvil added reviewers: LLDB, labath.
jankratochvil added a project: LLDB.
Herald added subscribers: abidh, ki.stfu.

There is already in use:

  lit/lit-lldb-init:settings set symbols.enable-external-lookup false
  packages/Python/lldbsuite/test/lldbtest.py:        self.runCmd('settings set symbols.enable-external-lookup false')

But those are not in effect during MI part of the testsuite.  Another problem is that `symbols.enable-external-lookup` (read by `GetEnableExternalLookup`) has been currently read only by `LocateMacOSXFilesUsingDebugSymbols` and therefore it had no effect on Linux.
On Red Hat platforms (Fedoras, RHEL-7) there is DWZ in use and so `MiSyntaxTestCase-test_lldbmi_output_grammar` FAILs due to:

  AssertionError: error: inconsistent pattern ''^.+?\n'' for state 0x5f (matched string: warning: (x86_64) /lib64/libstdc++.so.6 unsupported DW_FORM values: 0x1f20 0x1f21

It is the only testcase with this error. It happens due to:

  (lldb) target create "/lib64/libstdc++.so.6"
  Current executable set to '/lib64/libstdc++.so.6' (x86_64).
  (lldb) b main
  warning: (x86_64) /lib64/libstdc++.so.6 unsupported DW_FORM values: 0x1f20 0x1f21
  Breakpoint 1: no locations (pending).
  WARNING:  Unable to resolve breakpoint to any actual locations.

which happens only with `gcc-base-debuginfo` rpm installed (similarly for other packages).
It should also speed up the testsuite as it no longer needs to read `/usr/lib/debug` symbols which have no effect (and should not have any effect) on the testsuite results.




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