master branch: commit r16-6567 failed to bootstrap on Linux/x86_64 (commit r16-6566 builds)!

[Haochen Jiang via Gcc-regression]

fi
make[2]: Entering directory '/export/home/haochenj/src/gcc-regression'
rm -rf bld
mkdir -p bld
cd bld; \
RUNTESTFLAGS="--target_board='unix{-m32,}'" ../src-master/configure \
        --with-arch=corei7 --with-cpu=corei7 --enable-clocale=gnu 
--with-system-zlib --enable-shared --enable-cet --with-demangler-in-ld 
--enable-libmpx --prefix=/usr/gcc-16.0.0 --with-fpmath=sse 
    grep -E "(error:|Error)" makelog.r16-6567.x86_64.corei7 >> 
makelog.r16-6567.x86_64.corei7.mail; \
    tail -n +20 makelog.r16-6567.x86_64.corei7 | grep -C 10 -E "error:|Error:" 
>> makelog.r16-6567.x86_64.corei7.mail; \
make[6]: [Makefile:1857: x86_64-pc-linux-gnu/bits/largefile-config.h] Error 1 
(ignored)
make[6]: [Makefile:1856: x86_64-pc-linux-gnu/bits/largefile-config.h] Error 1 
(ignored)
make[6]: [Makefile:1857: x86_64-pc-linux-gnu/bits/largefile-config.h] Error 1 
(ignored)
../../src-master/gcc/fortran/trans-io.cc:1702:38: error: the address of 
‘gfc_use_rename::local_name’ will never be NULL [-Werror=address]
make[6]: *** [Makefile:1215: fortran/trans-io.o] Error 1
make[5]: *** [Makefile:5167: all-stage2-gcc] Error 2
make[4]: *** [Makefile:30918: stage2-bubble] Error 2
make[3]: *** [Makefile:31162: bootstrap] Error 2
make[2]: *** [Makefile:313: bootstrap] Error 2
==================== Detailed Info around error (+- 10 Lines) 
====================
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-I../../src-master/gcc/../libdecnumber 
-I../../src-master/gcc/../libdecnumber/bid -I../libdecnumber 
-I../../src-master/gcc/../libbacktrace 
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-I/export/home/haochenj/src/gcc-regression/src-master/isl/include  -o lto/lto.o 
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-I../../src-master/gcc/../include  -I../../src-master/gcc/../libcpp/include 
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-I../../src-master/gcc/../libdecnumber 
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-I../../src-master/gcc/../libdecnumber 
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../../src-master/gcc/fortran/trans-io.cc: In function ‘void 
transfer_namelist_element(stmtblock_t*, const char*, gfc_symbol*, 
gfc_component*, tree)’:
../../src-master/gcc/fortran/trans-io.cc:1702:38: error: the address of 
‘gfc_use_rename::local_name’ will never be NULL [-Werror=address]
 1702 |       && sym->ns->use_stmts->rename->local_name
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
In file included from ../../src-master/gcc/fortran/trans-io.cc:26:
../../src-master/gcc/fortran/gfortran.h:2172:8: note: 
‘gfc_use_rename::local_name’ declared here
 2172 |   char local_name[GFC_MAX_SYMBOL_LEN + 1], use_name[GFC_MAX_SYMBOL_LEN 
+ 1];
      |        ^~~~~~~~~~
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