Sterling-Augustine e77001c9f5 [libc] Use a sensible default when TEST_UNDECLARED_OUTPUTS_DIR is unset. (#167422) ...

There is no guarantee that this environment variable is set. Eg, when
running a test outside of the build system, such as under a debugger.
And passing a nullptr to the string constructor is undefined.

Use an empty string, which seems like it is close to the original
intent.

2025-11-11 11:49:10 -08:00

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