Re: bug#74428: tests/printf/printf-cov failure on macOS

[Bruno Haible]

Pádraig Brady wrote:
> On your macos 15 system, iconv() of 0x30 is failing to convert from utf8 to C,
> and the fallback in unicodeio.c is outputting the \u0030.
> Now I don't have access to macos to see exactly why that iconv() is failing,

The macOS iconv() is unusable, since macOS 12. [1][2]

A user needs to install GNU libiconv there, if they want programs to behave
normally. As documented in gnulib/DEPENDENCIES.

You may experiment with some patch to unicodeio.c, based on [2].

Or how about bypassing unicode_to_mb entirely if CODE >= 0 && CODE < 128 ?
unicode_to_mb was designed for specific characters like the Copyright sign
or the quotation marks. For plain ASCII characters you can bypass it.

Bruno

[1] https://lists.gnu.org/archive/html/bug-gnulib/2024-02/msg00123.html
[2] https://lists.gnu.org/archive/html/bug-gnulib/2024-02/msg00217.html