warning question

I get the warning listed below when building with the config options:

   --enable-newlib-iconv-encodings=big5,cp775,cp850,cp852,cp855,\
cp866,euc_jp,euc_kr,euc_tw,iso_8859_1,iso_8859_10,iso_8859_11,\
iso_8859_13,iso_8859_14,iso_8859_15,iso_8859_2,iso_8859_3,\
iso_8859_4,iso_8859_5,iso_8859_6,iso_8859_7,iso_8859_8,iso_8859_9,\
iso_ir_111,koi8_r,koi8_ru,koi8_u,koi8_uni,ucs_2,ucs_2_internal,\
ucs_2be,ucs_2le,ucs_4,ucs_4_internal,ucs_4be,ucs_4le,us_ascii,\
utf_16,utf_16be,utf_16le,utf_8,win_1250,win_1251,win_1252,\
win_1253,win_1254,win_1255,win_1256,win_1257,win_1258\
    --enable-newlib-reent-thread-local \
    --enable-newlib-io-c99-formats \
    --enable-threads \
    --target= aarch64-rtems6\

  CC       libc/stdio/libc_a-vdprintf.o
../../../newlib-cygwin/newlib/libc/stdio/tmpnam.c: In function '_tmpnam_r':
../../../newlib-cygwin/newlib/libc/stdio/tmpnam.c:135:14: warning: assignment to 'char *' from 'char' makes pointer from integer without a cast [-Wint-conversion]
  135 |       result = _REENT_EMERGENCY(p);
      |              ^

  CC       libc/signal/libc_a-psignal.o
../../../../newlib-cygwin/newlib/libc/stdio/tmpnam.c: In function '_tmpnam_r':
../../../../newlib-cygwin/newlib/libc/stdio/tmpnam.c:135:14: warning: assignment to 'char *' from 'char' makes pointer from integer without a cast [-Wint-conversion]
  135 |       result = _REENT_EMERGENCY(p);
      |              ^


Just wanted to know if this was a known issue.

Thanks
Jennifer Averett