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From: "bruno at clisp dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/54848] -ftrapv doesn't work when assigning to an
 integer with smaller size
Date: Mon, 20 May 2024 00:24:34 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D54848

Bruno Haible <bruno at clisp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bruno at clisp dot org

--- Comment #2 from Bruno Haible <bruno at clisp dot org> ---
Another test case:

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D u.c =3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
int
main ()
{
  unsigned short a =3D 0xeb64;
  unsigned short b =3D 0xf1e2;
  unsigned short c =3D a * b;
}
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
$ gcc -ftrapv u.c
$ ./a.out; echo $?
0

Reproduced with gcc 14.1.0.=