[Bug middle-end/71700] [5 Regression] wrong code with struct assignment with sub-word signed bitfields

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71700

ktkachov at gcc dot gnu.org changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution|--- |FIXED

--- Comment #7 from ktkachov at gcc dot gnu.org ---
Fixed for 5.5, 6.3, 7.0

[Bug middle-end/71700] [5 Regression] wrong code with struct assignment with sub-word signed bitfields

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71700

--- Comment #6 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Thu Aug 25 09:26:15 2016
New Revision: 239754

URL: https://gcc.gnu.org/viewcvs?rev=239754&root=gcc&view=rev
Log:
[expr.c] PR middle-end/71700: zero-extend sub-word value when widening
constructor element

Backport from mainline
2016-07-12  Kyrylo Tkachov  

PR middle-end/71700
* expr.c (store_constructor): Mask sign-extended bits when widening
sub-word constructor element at the start of a word.

* gcc.c-torture/execute/pr71700.c: New test.


Added:
branches/gcc-5-branch/gcc/testsuite/gcc.c-torture/execute/pr71700.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/expr.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog