W10 + Cygwin 3.0.7 + GCC 9.2 + undefined symbol `strtoflt128'

[rih5342]

I get 3 new errors when compiling a previously OK file.

A web search suggests a memory issue.

I've tried many permutations, the error won't go away, so I'm missing
something. 

This is my command line and resulting errors.



/cygdrive/C/cygwin64/home/rih2wm/gcc-trunk/bin/gfortran.exe -std=gnu -static
-m64 -mcmodel=medium -lgfortran -lquadmath -static table.o -o table.exe
/cygdrive/C/cygwin64/home/rih2wm/gcc-trunk/bin/../lib/gcc/x86_64-pc-cygwin/9.2.0/../../../../lib/libgfortran.a(read.o):
In function `_gfortrani_convert_real':
/___packages/gcc/gcc-9.2.0-build/x86_64-pc-cygwin/libgfortran/../../../gcc-9.2.0/libgfortran/io/read.c:175:(.text$_gfortrani_convert_real+0xb7):
relocation truncated to fit: R_X86_64_PC32 against undefined symbol
`strtoflt128'
/cygdrive/C/cygwin64/home/rih2wm/gcc-trunk/bin/../lib/gcc/x86_64-pc-cygwin/9.2.0/../../../../lib/libgfortran.a(read.o):
In function `_gfortrani_convert_infnan':
/___packages/gcc/gcc-9.2.0-build/x86_64-pc-cygwin/libgfortran/../../../gcc-9.2.0/libgfortran/io/read.c:251:(.text$_gfortrani_convert_infnan+0xb3):
relocation truncated to fit: R_X86_64_PC32 against undefined symbol
`strtoflt128'
collect2: error: ld returned 1 exit status
make: *** [makefile:111: table.exe] Error 1



How do I handle _gfortrani_convert_infnan' ,   '_gfortrani_convert_real',
and `strtoflt128' ?

Thank you.



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