This is the mail archive of the gcc-bugs@gcc.gnu.org mailing list for the GCC project.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11269 Summary: [tree-ssa] wrong-code Product: gcc Version: unknown Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P1 Component: optimization AssignedTo: unassigned@gcc.gnu.org ReportedBy: reichelt@gcc.gnu.org CC: dnovillo@gcc.gnu.org,gcc-bugs@gcc.gnu.org GCC host triplet: i686-pc-linux-gnu The following code snippet (inspired by PR6189) should return "1", but does not, if optimization on the tree-ssa-branch is turned on. --------------------------------------------------------------- struct A { int x[2]; int& GetFirst() { return x[0]; } }; A foo () { A a; a.GetFirst()=1; return a; } int main() { A b=foo(); return b.GetFirst(); } --------------------------------------------------------------- Without optimization I get the return value "1", with "-O" or "-O2" I get "192" and with "-O3" I get "0". This is a regression w.r.t. mainline.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |