Post #1825192

From David Malcolm, who among others mentioned: * GCC error messages have a hierarchical structure to them. In GCC 15, I added an experimental option that shows this structure as a collection of nested bullet points. In GCC 16, this behavior is now the default. * GCC 16 includes several improvements to the generated SARIF output. * In GCC 15, I added -fdiagnostics-add-output= to allow for multiple kinds of diagnostic output simultaneously. Plain text output has limitations, so GCC 16 includes a new experimental-html option. * Static analyzer improvements https://developers.redhat.com/articles/2026/04/28/gcc-16-improved-error-messages-sarif-output #gcc #gcc16