Results 2 issues of Hao Chen

### Description of the problem / feature request: cc toolchain is not correctly generated when using ccache with clang, while ccache with gcc works. ### Bugs: what's the simplest, easiest...

P3

Compiled with Apple Clang 13.1.6 and boost 1.79. When the input is a non-empty invalid string, then the exception thrown by the decompressor cannot be caught as a gzip_error, even...