tree de37769c4457604c2f6a2742325a96249fd393ca
parent 323655e22ff7c9cceae93678f23e73659b980b1c
author Michael Buch <michaelbuch12@gmail.com> 1658832362 +0100
committer Copybara-Service <copybara-worker@google.com> 1658847280 -0700

[LLDB][ClangExpression] Prevent nullptr namespace map access during logging

Some codepaths lead to `namespace_map == nullptr` when we get to
`ClangASTSource::FindCompleteType`. This occurred while debugging
an lldb session that had `settings set target.import-std-module true`.

In that case, with `LLDBLog::Expressions` logging enabled, we would
dereference a `nullptr` and crash.

This commit moves the logging until after we check for `nullptr`.

**Testing**

* Fixed the specific crash I was seeing while debugging an `lldb`
  session with `import-std-module` enabled.

Differential Revision: https://reviews.llvm.org/D130561

GitOrigin-RevId: 0a412b3505f42558573e0d9005d4fe7c6102d8c9