the following testcase is extracted from WINE.
It is to some degree problematic because "BOOL" is a signed int,
but we use 1 bit wide bitfields here.
Also the ":0" might be a GNU extension.
The problem is that with gcc 3.3.5:
gcc -O2 -o xx xx.c ; ./xx
<no output>
but with gcc 4.1 branch:
/home/marcus/projects/gcc/BIN/bin/gcc -O2 -march=i586 -mtune=i586 xx.c -o
xx; ./xx
xx: xx.c:24: main: Assertion `sizeof(CABINETSTATE) == 8' failed.
so the layout and final size of this struct changed.
--
Summary: bitfield layout change (regression?)
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: marcus at jet dot franken dot de
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22275
