For example: https://github.com/WebKit/WebKit/commit/fdc83ec3c441df44f9e272d1426baa01fdb287fe introduced errors in the WPE build, and caused https://ews-build.webkit.org/#/builders/8/builds/96909 to spend > 5 hrs compiling, generating millions of lines of output. 99% of those lines were error output, and there were 100k errors emitted in total.

Clang avoids explosive situations like this by bailing out after 20 errors (configurable by the -ferror-limit=<n> option). GCC doesn't have an error limit by default, but one can be configured using -fmax-errors=<n>. We should use this to match GCC's behavior to clang's.