Julian Lettner 484d0408f9 [lldb] Fix source line annotations for libsanitizers traces (#154247) ...

When providing allocation and deallocation traces,
the ASan compiler-rt runtime already provides call
addresses (`TracePCType::Calls`).

On Darwin, system sanitizers (libsanitizers)
provides return address.  It also discards a few
non-user frames at the top of the stack, because
these internal libmalloc/libsanitizers stack
frames do not provide any value when diagnosing
memory errors.

Introduce and add handling for
`TracePCType::ReturnsNoZerothFrame` to cover this
case and enable libsanitizers traces line-level
testing.

rdar://157596927

---
Commit 1 is a mechanical refactoring to introduce
and adopt `TracePCType` enum to replace
`pcs_are_call_addresses` bool.  It preserve the
current behavior:
```
pcs_are_call_addresses:
  false  ->  TracePCType::Returns (default)
  true   ->  TracePCType::Calls
``` 

Best reviewed commit by commit.

2025-08-20 14:33:27 -07:00

..

MacOSX

[lldb] Fix source line annotations for libsanitizers traces (#154247)

2025-08-20 14:33:27 -07:00

CMakeLists.txt

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