I work at Red Hat on GCC, the GNU Compiler Collection. I spent most of the past year working on how GCC emits diagnostics (errors and warnings) in the hope of making it easier to use. Let's take a look at 6 improvements to look forward to in the upcoming GCC 15.

1. Prettier execution paths
2. A new look for C++ template errors
3. Machine-readable diagnostics
4. An easier transition to C23
5. A revamped color scheme
6. libgdiagnostics