[PATCH] D68472: [test] Depend on C.UTF-8 dependency for mri-utf8.test

[Hubert Tong via Phabricator via llvm-commits]

hubert.reinterpretcast added a comment.

In D68472#1695156 <https://reviews.llvm.org/D68472#1695156>, @thopre wrote:

> I believe that's because it is a builtin locale (much like the C locale). There wasn't one in /usr/share/locale on the Ubuntu docker image I've tested this but it did work while trying with en_US.UTF-8 did not.


I mean that using `"C.UTF-8"` with `setlocale` gets me a null pointer, and using `"en_US.UTF-8"` gets me a string with the following:

  #include <locale.h>
  extern int printf(const char *, ...);
  void trylocale(const char *locale) {
    const char *ret = setlocale(LC_ALL, locale);
    printf("setlocale(\"%s\") returned \"%s\".\n", locale, ret ? ret : "(null)");
  }
  int main(void) {
    trylocale("C.UTF-8");
    trylocale("en_US.UTF-8");
  }

On AIX:

  setlocale("C.UTF-8") returned "(null)".
  setlocale("en_US.UTF-8") returned "en_US.UTF-8 en_US.UTF-8 en_US.UTF-8 en_US.UTF-8 en_US.UTF-8 en_US.UTF-8".

On RHEL 7:

  setlocale("C.UTF-8") returned "(null)".
  setlocale("en_US.UTF-8") returned "en_US.UTF-8".


Repository:
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