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[Bug middle-end/19606] wrong code for arith.expr: (((unsigned int)(signed int) a ) / 2LL) with signed char a=-4
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Feb 2005 22:40:36 -0000
- Subject: [Bug middle-end/19606] wrong code for arith.expr: (((unsigned int)(signed int) a ) / 2LL) with signed char a=-4
- References: <20050124160006.19606.heinrich.brand@fujitsu-siemens.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From steven at gcc dot gnu dot org 2005-02-11 22:40 -------
Fails on i686 and on AMD64 also. And with both gcc and g++...
In c_finish_return, retval is "(long long int) (a / 2)". That is already
wrong.
In parser_build_binary_op we build TRUNC_DIV_EXPR <(unsigned int) a, 2LL>,
which is also already wrong (lost the "signed int" cast).
And so we dig deeper into the parser...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19606