I just got hit by the following dunfell build issue on my debian/testing dev box:

 argp-fmtstream.c:(.text+0x4ca): undefined reference to `_IO_fwide'
 /home/yann/yocto/meta-blade/meta-shadow-os/build-boxv2/tmp/hosttools/ld: argp-fmtstream.c:(.text+0x51d): undefined reference to `_IO_fwide'
 /home/yann/yocto/meta-blade/meta-shadow-os/build-boxv2/tmp/hosttools/ld: argp-help.o: in function `argp_failure':
 argp-help.c:(.text+0x1fb1): undefined reference to `_IO_fwide'
 collect2: error: ld returned 1 exit status
 make: *** [Makefile:60: localedef] Error 1

After some digging I found https://patchwork.openembedded.org/series/20136 whose patch 4

addresses this very problem.

I could not find any discussion about those patches (it's hard to be sure though, I found the

new mail archive quite impractical).

Are there any reasons why this 2019-09 series is still NEW ?