On Mon, Apr 15, 2013 at 3:58 PM, Marcus Meissner <mar...@jet.franken.de>wrote:
> On Mon, Apr 15, 2013 at 02:37:27PM -0600, James Eder wrote: > > As many of you no doubt know, GCC recently released 4.8.0. This new > > version introduces a new optimization level enabled by -Og with the > > following description (from the man page): > > > > "Optimize debugging experience. -Og enables optimizations that do not > > interfere with debugging. It should be the optimization level of choice > for > > the standard edit-compile-debug cycle, offering a reasonable level of > > optimization while maintaining fast compilation and a good debugging > > experience." > > > > Of course I had to try it out. I found that building Wine lead to GCC > > dieing with > > > > ... dlls/kernel32/console.c:1691:1: internal compiler error: > Segmentation > > fault > > > > I also found > > > > ... dlls/kernel32/computername.c:701:1: internal compiler error: > > Segmentation fault > > > > I eventually stumbled my way into the enclosed patch which lets GCC build > > Wine with -Og. > > > > I'm not sure if this change (or something similar) makes sense for Wine. > > I'm fairly certain some changes make sense for GCC (I suspect that GCC > > should not segfault). > > > > I haven't submitted a bug for GCC because I suspect they'll want me to > > provide something simpler to compile than the Wine source tree. I > > certainly won't be upset if someone beats me too it. I'm not sure how > much > > time in the near future I'll spend on it. "Eventually" is probably the > > word that fits. > > > > At any rate, I wanted to at least share my experiences in case anyone is > > interested in heading down the same path. > > You copy and paste the failing commandline and add --save-temps, like e.g.: > > gcc -c -I/home/marcus/projects/wine/dlls/kernel32 -I. > -I/home/marcus/projects/wine/include -I../../include -D__WINESRC__ > -D_KERNEL32_ -D_NORMALIZE_ -D_REENTRANT -fPIC -Wall -pipe > -fno-strict-aliasing -Wdeclaration-after-statement -Wempty-body > -Wignored-qualifiers -Wstrict-prototypes -Wtype-limits > -Wunused-but-set-parameter -Wwrite-strings -gdwarf-2 -gstrict-dwarf > -Wpointer-arith -Wlogical-op -I/usr/include/freetype2 -Wall -g > -fstack-protector -o console.o > /home/marcus/projects/wine/dlls/kernel32/console.c -Og --save-temps > > it will generate a console.i file in the currenct directory. > > The console.i file and above commandline are a start for the gcc bug. > > Ciao, Marcus > Looks like the bug is fixed and should be in for GCC 4.8.1. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56992 -- Jim
