[ORC][examples][LLVM-C] Fix ThreadSafeContext to wrap existing context

[MrAnno]

Fixes #155881

[github-actions]

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[MrAnno]

@lhames This is related to #146819

[lhames]

Thank you very much for spotting this @MrAnno , and taking the time to write up a fix.

Looks good to me!

[github-actions]

✅ With the latest revision this PR passed the C/C++ code formatter.

[MrAnno]

Oh, sorry for not formatting the code properly.

[github-actions]

@MrAnno Congratulations on having your first Pull Request (PR) merged into the LLVM Project!

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[lhames]

Oh, sorry for not formatting the code properly.

@MrAnno I wouldn't worry, it took me two tries to get it right too. ;)

For the future: you can run the git-clang-format tool (llvm-project/clang/tools/clang-format/git-clang-format) to format your patches according to clang's standards. That usually makes the bots happy.

Thanks again for contributing this fix!

[llvm-ci]

LLVM Buildbot has detected a new failure on builder cross-project-tests-sie-ubuntu running on doug-worker-1a while building llvm at step 6 "test-build-unified-tree-check-cross-project".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/181/builds/27500

Here is the relevant piece of the build log for the reference

Step 6 (test-build-unified-tree-check-cross-project) failure: test (failure)
******************** TEST 'cross-project-tests :: debuginfo-tests/dexter/feature_tests/commands/perfect/expect_watch_value.cpp' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
clang++ -O0 -glldb -std=gnu++11 /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/expect_watch_value.cpp -o /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/Output/expect_watch_value.cpp.tmp # RUN: at line 7
+ clang++ -O0 -glldb -std=gnu++11 /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/expect_watch_value.cpp -o /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/Output/expect_watch_value.cpp.tmp
"/usr/bin/python3.8" "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/dexter.py" test --fail-lt 1.0 -w --debugger lldb-dap --lldb-executable "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/bin/lldb-dap"  --dap-message-log=/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/Output/expect_watch_value.cpp.tmp.dap.log --binary /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/Output/expect_watch_value.cpp.tmp -- /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/expect_watch_value.cpp | /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/bin/FileCheck --dump-input-context=999999999 /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/expect_watch_value.cpp # RUN: at line 8
+ /usr/bin/python3.8 /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/dexter.py test --fail-lt 1.0 -w --debugger lldb-dap --lldb-executable /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/bin/lldb-dap --dap-message-log=/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/Output/expect_watch_value.cpp.tmp.dap.log --binary /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/Output/expect_watch_value.cpp.tmp -- /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/expect_watch_value.cpp
+ /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/bin/FileCheck --dump-input-context=999999999 /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/perfect/expect_watch_value.cpp
-> {
  "type": "request",
  "command": "initialize",
  "arguments": {
    "clientID": "dexter",
    "adapterID": "lldb-dap",
    "pathFormat": "path",
    "linesStartAt1": true,
    "columnsStartAt1": true,
    "supportsVariableType": true,
    "supportsVariablePaging": true,
    "supportsRunInTerminalRequest": false
  },
  "seq": 1
}
<- {
  "body": {
    "$__lldb_version": "lldb version 22.0.0git (https://github.com/llvm/llvm-project.git revision 4546522aa34c1f56a22e35cb411d4e18481d1854)\n  clang revision 4546522aa34c1f56a22e35cb411d4e18481d1854\n  llvm revision 4546522aa34c1f56a22e35cb411d4e18481d1854",
    "completionTriggerCharacters": [
      ".",
      " ",
      "\t"
    ],
    "exceptionBreakpointFilters": [
      {
        "description": "C++ Catch",
        "filter": "cpp_catch",
        "label": "C++ Catch",
        "supportsCondition": true
      },
      {
        "description": "C++ Throw",
        "filter": "cpp_throw",
        "label": "C++ Throw",
        "supportsCondition": true
      },
      {
        "description": "Objective-C Catch",
        "filter": "objc_catch",
        "label": "Objective-C Catch",
...