We fail to build the linux kernel on i686 with debugging enabled. drivers/usb/media/w9968cf.c:
/usr/lib/gcc/i586-suse-linux/4.1.0/cc1 -fpreprocessed w9968cf.i -quiet -dumpbase w9968cf.i -m32 -msoft-float -mpreferred-stack-boundary=2 -march=i586 -mregparm=3 -auxbase-strip drivers/usb/media/.tmp_w9968cf.o -g -O2 -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -Werror-implicit-function-declaration -Wdeclaration-after-statement -Wno-pointer-sign -version -fno-strict-aliasing -fno-common -ffreestanding -fomit-frame-pointer -fno-unit-at-a-time -o /tmp/ccaO9lCn.s drivers/usb/media/w9968cf.c: In function w9968cf_set_picture: drivers/usb/media/w9968cf.c:1827: internal compiler error: in def_cfa_1, at dwarf2out.c:792 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://www.suse.de/feedback> for instructions. (reducing) -- Summary: [4.1/4.2 Regression] ICE in def_cfa_1, at dwarf2out.c:792 Product: gcc Version: 4.1.0 Status: UNCONFIRMED Keywords: ice-on-invalid-code Severity: critical Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: rguenth at gcc dot gnu dot org GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25023