
Support `%` patterns in sanitizer report paths, similar to the patterns
supported in IRPGO
4bf67cdf02/compiler-rt/lib/profile/InstrProfilingFile.c (L999-L1017)
* `%%` becomes `%`
* `%H` expands to the environment variable `HOME`
* `%t` expands to the environment variable `TMPDIR`
* `%p` expands to the process ID (PID)
In particular, the `%H` pattern is useful to resolve the home directory
at runtime, which is not possible before this PR.
Also, avoid using `Report()` before the report path has been set.
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================