6 usability improvements in GCC 15 | Red Hat Developer
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GCC 15 brings better error messages and diagnostics for your code, including prettier execution paths and easier-to-read compiler errors for C++ templates

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