tools/tar/patches/001-fix-macos-vasnprintf.patch

   1 --- a/gnu/vasnprintf.c
   2 +++ b/gnu/vasnprintf.c
   3 @@ -4858,7 +4858,11 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *
   4  #endif
   5                    *fbp = dp->conversion;
   6  #if USE_SNPRINTF
   7 -# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
   8 +# if ! (((__GLIBC__ > 2                                                 \
   9 +          || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3))                  \
  10 +         && !defined __UCLIBC__)                                        \
  11 +        || (defined __APPLE__ && defined __MACH__)                      \
  12 +        || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
  13                  fbp[1] = '%';
  14                  fbp[2] = 'n';
  15                  fbp[3] = '\0';
  16 @@ -4872,6 +4876,9 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *
  17                     in format strings in writable memory may crash the program
  18                     (if compiled with _FORTIFY_SOURCE=2), so we should avoid it
  19                     in this situation.  */
  20 +                /* macOS 10.13 High Sierra behaves like glibc with
  21 +                   _FORTIFY_SOURCE=2, and older macOS releases
  22 +                   presumably do not need %n.  */
  23                  /* On native Windows systems (such as mingw), we can avoid using
  24                     %n because:
  25                       - Although the gl_SNPRINTF_TRUNCATION_C99 test fails,