Snippets for icu 78.3 from Fedora s390x

Sourced from https://kojipkgs.fedoraproject.org/packages/icu/78.3/7.fc45/data/logs/s390x/build.log.

/usr/include/bits/string_fortified.h:29:33: warning: ‘memcpy’ specified bound between 18446744071562067968 and 18446744073709551612 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
   29 |   return __builtin___memcpy_chk (__dest, __src, __len,
      |          ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
   30 |                                  __glibc_objsize0 (__dest));
      |                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~

/usr/include/bits/string_fortified.h:29:33: warning: ‘__builtin_memcpy’ specified bound between 18446744071562067968 and 18446744073709551612 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
   29 |   return __builtin___memcpy_chk (__dest, __src, __len,
      |                                 ^

collationiterator.h:91:23: warning: ‘MEM[(const struct CollationData *)this_9(D) + 400B].trie’ is used uninitialized [-Wuninitialized]
   91 |             : trie(d->trie),
      |                    ~~~^~~~

decNumber.cpp:2974:30: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 2974 |         t->lsu[0]=9; t->lsu[1]=5; t->lsu[2]=2;
      |                      ~~~~~~~~^

decNumber.cpp:2974:43: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 2974 |         t->lsu[0]=9; t->lsu[1]=5; t->lsu[2]=2;
      |                                   ~~~~~~~~^

number_mapper.cpp:135:49: warning: ‘currencyUsage’ may be used uninitialized [-Wmaybe-uninitialized]
  135 |         precision = Precision::constructCurrency(currencyUsage).withCurrency(currency);
      |                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

collationiterator.h:91:23: warning: ‘MEM[(const struct CollationData *)this_9(D) + 400B].trie’ is used uninitialized [-Wuninitialized]
   91 |             : trie(d->trie),
      |                       ^

decNumber.cpp:2974:30: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 2974 |         t->lsu[0]=9; t->lsu[1]=5; t->lsu[2]=2;
      |                              ^

decNumber.cpp:2974:43: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 2974 |         t->lsu[0]=9; t->lsu[1]=5; t->lsu[2]=2;
      |                                           ^

formattedvalue.cpp:220:1: warning: function may return address of local variable [-Wreturn-local-addr]
  220 | }
      | ^

number_mapper.cpp:135:49: warning: ‘currencyUsage’ may be used uninitialized [-Wmaybe-uninitialized]
  135 |         precision = Precision::constructCurrency(currencyUsage).withCurrency(currency);
      |                                                 ^

utrans.cpp:115:21: warning: ‘empty’ may be used uninitialized [-Wmaybe-uninitialized]
  115 |     (*func->replace)(rep, start, limit, text.getBuffer(), text.length());
      |                     ^

pkg_genc.cpp:648:23: warning: comparison of integer expressions of different signedness: ‘int32_t’ {aka ‘int’} and ‘long unsigned int’ [-Wsign-compare]
  648 |         for (i = 0; i < sizeof(uint32_t); i++)
      |                     ~~^~~~~~~~~~~~~~~~~~

/usr/include/bits/string_fortified.h:112:34: warning: ‘strncpy’ destination unchanged after copying no bytes [-Wstringop-truncation]
  112 |   return __builtin___strncpy_chk (__dest, __src, __len,
      |          ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
  113 |                                   __glibc_objsize (__dest));
      |                                   ~~~~~~~~~~~~~~~~~~~~~~~~~

../../common/unicode/utf16.h:434:23: warning: array subscript -2 is below array bounds of ‘const UChar[7]’ [-Warray-bounds=]
  434 |     if(U16_IS_LEAD((s)[(i)++]) && (i)!=(length) && U16_IS_TRAIL((s)[i])) { \
      |                       ^

../../common/unicode/utf8.h:534:20: warning: array subscript -2 is below array bounds of ‘const uint8_t[23]’ [-Warray-bounds=]
  534 |     uint8_t __b=(s)[(i)++]; \
      |                 ~~~^~~~~~~