https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99236
Bug ID: 99236
Summary: Undefined behaviour in libgcc
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: zeccav at gmail dot com
Target Milestone: ---
! must be compiled and run
! It does not need sanitized compiler, but
! must be loaded with sanitized version of libgcc_s.so.1
! ldd a.out -> libgcc_s.so.1 =>
/home/vitti/local/gcc-150221-undefined/lib64/libgcc_s.so.1
!../../../gcc-150221/libgcc/libgcc2.c:1837:31: runtime error: negation of
-2147483648 cannot be represented in type 'int'; cast to an unsigned type to
negate this value to itself
! libgcc2.c:1837 -> "unsigned int n = m < 0 ? -m : m;"
a = 3.0
b = a**(-2147483647_4-1_4)
end
