master branch: commit r15-1642 failed to bootstrap on Linux/x86_64 (commit r15-1594 builds)!

master branch: commit r15-1642 failed to bootstrap on Linux/x86_64 (commit r15-1594 builds)!

[haochenj]

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-15.0.0 --with-fpmath=sse 
checking build system type... x86_64-pc-linux-gnu
    grep "Error " makelog.r15-1642.x86_64.corei7 >> makelog.r15-1642.x86_64.corei7.mail; \
make[6]: [Makefile:1832: x86_64-pc-linux-gnu/bits/largefile-config.h] Error 1 (ignored)
make[6]: [Makefile:1831: x86_64-pc-linux-gnu/bits/largefile-config.h] Error 1 (ignored)
make[6]: [Makefile:1832: x86_64-pc-linux-gnu/bits/largefile-config.h] Error 1 (ignored)
make[6]: *** [Makefile:2557: i386.o] Error 1
make[5]: *** [Makefile:5108: all-stage2-gcc] Error 2
make[4]: *** [Makefile:30031: stage2-bubble] Error 2
make[3]: *** [Makefile:30275: bootstrap] Error 2
make[2]: *** [Makefile:313: bootstrap] Error 2
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../../src-master/gcc/gengtype-lex.l: In function ‘int yylex(const char**)’:
gengtype-lex.cc:356:15: warning: this statement may fall through [-Wimplicit-fallthrough=]
  356 |  */
      |  ~~           ^      
../../src-master/gcc/gengtype-lex.l:119:1: note: in expansion of macro ‘YY_DO_BEFORE_ACTION’
  119 | "GTY"/{EOID}                    { return GTY_TOKEN; }
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../src-master/gcc/gengtype-lex.l:114:1: note: here
  114 | "^"                                     |
      | ^~~~~~~~
gengtype-lex.cc:356:15: warning: this statement may fall through [-Wimplicit-fallthrough=]
  356 |  */
      |  ~~           ^      
../../src-master/gcc/gengtype-lex.l:139:1: note: in expansion of macro ‘YY_DO_BEFORE_ACTION’
  139 | 
      | ^                  
../../src-master/gcc/gengtype-lex.l:135:1: note: here
  135 |   size_t len;
      | ^ ~~
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make[6]: *** Waiting for unfinished jobs....
rm gfdl.pod gcc.pod gfortran.pod gcov-dump.pod gcov-tool.pod fsf-funding.pod gpl.pod cpp.pod gcov.pod lto-dump.pod
make[6]: Leaving directory '/export/home/haochenj/src/gcc-regression/bld/gcc'
make[5]: *** [Makefile:5108: all-stage2-gcc] Error 2
make[5]: Leaving directory '/export/home/haochenj/src/gcc-regression/bld'
make[4]: *** [Makefile:30031: stage2-bubble] Error 2
make[4]: Leaving directory '/export/home/haochenj/src/gcc-regression/bld'
make[3]: *** [Makefile:30275: bootstrap] Error 2
make[3]: Leaving directory '/export/home/haochenj/src/gcc-regression/bld'
Command exited with non-zero status 2
14893.67user 839.08system 20:51.76elapsed 1256%CPU (0avgtext+0avgdata 1483776maxresident)k
0inputs+10049632outputs (702major+129147294minor)pagefaults 0swaps
make[2]: *** [Makefile:313: bootstrap] Error 2
make[2]: Leaving directory '/export/home/haochenj/src/gcc-regression'