llvm-project

6110dead - [clang][scan-deps] Add option to disable caching stat failures (#144000)

[clang][scan-deps] Add option to disable caching stat failures (#144000) While the source code isn't supposed to change during a build, in some environments it does. This adds an option that disables caching of stat failures, meaning that source files can be added to the build during scanning. This adds a `-no-cache-negative-stats` option to clang-scan-deps to enable this behavior. There are no tests for clang-scan-deps as there's no reliable way to do so from it. A unit test has been added that modifies the filesystem between scans to test it.