master branch: commit r16-938 failed to bootstrap on Linux/x86_64 (commit r16-937 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.r16-938.x86_64.corei7 >> 
makelog.r16-938.x86_64.corei7.mail; \
    tail -n +20 makelog.r16-938.x86_64.corei7 | grep -C 10 -E "error:|Error:" 
>> makelog.r16-938.x86_64.corei7.mail; \
make[6]: [Makefile:1843: x86_64-pc-linux-gnu/bits/largefile-config.h] Error 1 
(ignored)
make[6]: [Makefile:1842: x86_64-pc-linux-gnu/bits/largefile-config.h] Error 1 
(ignored)
make[6]: [Makefile:1843: x86_64-pc-linux-gnu/bits/largefile-config.h] Error 1 
(ignored)
../../src-master/gcc/fortran/simplify.cc:2305:3: error: ‘mpfr_fmod_ui’ was not 
declared in this scope; did you mean ‘mpfr_fmodquo’?
../../src-master/gcc/fortran/simplify.cc:2346:3: error: ‘mpfr_fmod_ui’ was not 
declared in this scope; did you mean ‘mpfr_fmodquo’?
make[6]: *** [Makefile:1210: fortran/simplify.o] Error 1
make[5]: *** [Makefile:5126: all-stage2-gcc] Error 2
make[4]: *** [Makefile:30130: stage2-bubble] Error 2
make[3]: *** [Makefile:30374: bootstrap] Error 2
make[2]: *** [Makefile:313: bootstrap] Error 2
==================== Detailed Info around error (+- 10 Lines) 
====================
/export/home/haochenj/src/gcc-regression/bld/./prev-gcc/xg++ 
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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. -Ifortran -I../../src-master/gcc -I../../src-master/gcc/fortran 
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-I../../src-master/gcc/../libdecnumber 
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-I. -Ifortran -I../../src-master/gcc -I../../src-master/gcc/fortran 
-I../../src-master/gcc/../include  -I../../src-master/gcc/../libcpp/include 
-I../../src-master/gcc/../libcody 
-I/export/home/haochenj/src/gcc-regression/bld/./gmp 
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-I../../src-master/gcc/../libdecnumber 
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-I../../src-master/gcc/../libbacktrace 
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-I/export/home/haochenj/src/gcc-regression/bld/./gmp 
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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/simplify.cc: In function ‘gfc_expr* 
gfc_simplify_cospi(gfc_expr*)’:
../../src-master/gcc/fortran/simplify.cc:2305:3: error: ‘mpfr_fmod_ui’ was not 
declared in this scope; did you mean ‘mpfr_fmodquo’?
 2305 |   mpfr_fmod_ui (cs, n, 2, GFC_RND_MODE);
      |   ^~~~~~~~~~~~
      |   mpfr_fmodquo
../../src-master/gcc/fortran/simplify.cc: In function ‘gfc_expr* 
gfc_simplify_sinpi(gfc_expr*)’:
../../src-master/gcc/fortran/simplify.cc:2346:3: error: ‘mpfr_fmod_ui’ was not 
declared in this scope; did you mean ‘mpfr_fmodquo’?
 2346 |   mpfr_fmod_ui (sn, n, 2, GFC_RND_MODE);
      |   ^~~~~~~~~~~~
      |   mpfr_fmodquo
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