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From: "s__nakayama at infoseek dot jp" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/30332] New: bit-field: optimization BUG? Date: Sat, 30 Dec 2006 08:21:00 -0000 [thread overview] Message-ID: <bug-30332-10812@http.gcc.gnu.org/bugzilla/> (raw) The output is different by the optimization. testcase: #include <stdio.h> struct S { unsigned int long long a:33; }; int main () { struct S x = { -1 }; typeof(+x.a) z = x.a+10; printf("%llx\n", z); return 0; } result: $ g++ bug.cpp; ./a 200000009 $ g++ -O bug.cpp; ./a 9 gcc version: 4.2 20061212 -- Summary: bit-field: optimization BUG? Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: s__nakayama at infoseek dot jp http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30332
next reply other threads:[~2006-12-30 8:21 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2006-12-30 8:21 s__nakayama at infoseek dot jp [this message] 2006-12-30 8:28 ` [Bug c++/30332] " pinskia at gcc dot gnu dot org 2007-01-21 5:29 ` bangerth at dealii dot org 2007-01-21 5:32 ` [Bug c++/30332] [4.1/4.2?/4.3? regression] " bangerth at dealii dot org 2007-01-21 22:01 ` [Bug c++/30332] [4.1/4.2/4.3 " pinskia at gcc dot gnu dot org 2007-01-25 6:06 ` mmitchel at gcc dot gnu dot org 2007-02-14 9:28 ` mmitchel at gcc dot gnu dot org 2007-02-21 15:12 ` rguenth at gcc dot gnu dot org 2007-12-11 13:47 ` rguenth at gcc dot gnu dot org 2008-01-25 12:56 ` [Bug c++/30332] [4.1/4.2 " rguenth at gcc dot gnu dot org 2008-07-04 21:48 ` [Bug c++/30332] [4.2 " jsm28 at gcc dot gnu dot org 2009-03-30 20:20 ` jsm28 at gcc dot gnu dot org
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