https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99203
Bug ID: 99203
Summary: Undefined behaviour in libquadmath file print_fp.c
function __quadmath_printf_fp
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libquadmath
Assignee: unassigned at gcc dot gnu.org
Reporter: zeccav at gmail dot com
Target Milestone: ---
! from fmt_en.f90
! must be compiled and run
! gfortran compiler needs not be sanitized
! must load sanitized libquadmath.so.0
! ldd a.out -> libquadmath.so.0 =>
/home/vitti/local/gcc-150221-undefined/lib64/libquadmath.so.0
!../../../gcc-150221/libquadmath/printf/printf_fp.c:762:4: runtime error:
passing zero to ctz(), which is not a valid argument
!../../../gcc-150221/libquadmath/printf/printf_fp.c:762: runtime error: passing
zero to ctz(), which is not a valid argument
! printf_fp.c:762 -> "count_trailing_zeros (cnt_l, tmp[0]);"
write(*, "(en15.2)") real(-.44444,kind=10)
write(*, "(en15.2)") real(-.44444,kind=16)
end
