Follow-up Comment #2, bug #39152 (project gsl):
Intel icc turns on unsafe floating point optimizations by default, where gcc
does not (gcc must specify -ffast-math for these). Compiling GSL with gcc
-ffast-math produces many similar errors as seen by the icc logs below. To
turn off unsafe optimizations in icc use -fp-model precise:
make CFLAGS="-fp-model precise -g -O2"
make CFLAGS="-fp-model double -g -O2"
Both of these pass all tests
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