Jon Ross-Perkins 74d6fc0b9f Update LLVM and use a hermetic llvm-symbolizer (#4347) ...

This only sets the symbolizer for our more used targets; not sure if
there's a great way to set it everywhere (I suppose I could try wrapping
cc_binary etc rules if there's a strong preference).

There is a downside here, symbolizing a fastbuild crash seems to take
about 3s. Not sure if there's a good way to get a faster llvm-symbolizer
execution...?

I tried running with the new LLVM update without the
LLVM_SYMBOLIZER_PATH, and it looks like that's insufficient. With the
settings, I now get readable crashes:

```
 #9 0x000055dc007d1724 void Carbon::Internal::CheckFail<Carbon::TemplateString<5>{"FATAL"}, Carbon::TemplateString<27>{"toolchain/driver/driver.cpp"}, 84, Carbon::TemplateString<0>{}, Carbon::TemplateString<3>{"err"}>() (/usr/local/google/home/jperkins/.cache/bazel/_bazel_jperkins/85deb7d9d96f7e0e80b42618a55969d7/sandbox/linux-sandbox/9383/execroot/_main/bazel-out/k8-fastbuild/bin/toolchain/testing/file_test.runfiles/_main/toolchain/testing/file_test+0x2894724)
```

Note the LLVM update is for
https://github.com/llvm/llvm-project/pull/109021

2024-09-27 20:41:55 +00:00

..

BUILD

Update LLVM and use a hermetic llvm-symbolizer (#4347)

2024-09-27 20:41:55 +00:00

file_test.cpp

Add support for capturing console output to FileTest. (#4339)

2024-09-27 16:10:44 +00:00

yaml_test_helpers_test.cpp

Detect invalid yaml. (#3239)

2023-09-15 21:28:15 +00:00

yaml_test_helpers.cpp

Clean up some misc toolchain braced inits. (#4013)

2024-05-31 23:23:57 +00:00

yaml_test_helpers.h

Add indentation to yaml test failure output to make it easier to read. (#4201)

2024-08-07 22:41:28 +00:00