Hi,

2 out of the 4 bugs regarding format string processing in the std.format package are still open:

• https://github.com/dlang/phobos/issues/10711
• https://github.com/dlang/phobos/issues/10712

Their impact is not only that

• some format strings written according to the D documentation https://dlang.org/library/std/format.html produce an exception at runtime,

but also that

• the format string checking in 'msgfmt -c' (which is based on the D documentation) may consider some format strings as valid that will produce an exception at runtime.

On Friday, 3 October 2025 at 23:03:21 UTC, Bruno Haible wrote:

neither should be fixed