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From: "zeccav at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libquadmath/99203] New: Undefined behaviour in libquadmath file print_fp.c function __quadmath_printf_fp
Date: Mon, 22 Feb 2021 15:57:49 +0000 [thread overview]
Message-ID: <bug-99203-4@http.gcc.gnu.org/bugzilla/> (raw)
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
next reply other threads:[~2021-02-22 15:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-22 15:57 zeccav at gmail dot com [this message]
2021-02-23 8:59 ` [Bug libquadmath/99203] " marxin at gcc dot gnu.org
2021-12-17 9:33 ` fxcoudert at gcc dot gnu.org
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