[gnutls-devel] GnuTLS | Use locale-independant string comparisons and character type checks (#570)

[Development of GNU's TLS library]

New Issue was created.

Issue 570: https://gitlab.com/gnutls/gnutls/issues/570
Author:    Tim Rühsen
Assignee:  

Just saw that the code is full of calls to strcasecmp/strncasecmp and is... (isdigit, ...) where definitely a pure ASCII comparison is wanted. Those functions have side known effects in certain locales (e.g. turkish 'I' / 'i' do not transform into each other while they do in other locales).

There might be a few places where those functions are explicitly needed, but normally the ASCII variants are the proper choice. Gnulib gives us those functions already (e.g. c_strcasecmp, c_isdigit, ...), so it's mainly a search&replace job spiced with #includes and addition of the appropriate gnulib modules to `bootstrap.conf`.

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