On 31.01.2011 10:44, Aurelien Jarno wrote: > On Mon, Jan 31, 2011 at 10:35:30AM +0100, Christophe Lyon wrote: >> On 31.01.2011 09:20, Aurelien Jarno wrote: >>> On Fri, Jan 28, 2011 at 04:50:59PM +0100, christophe.l...@st.com wrote: >>>> From: Christophe Lyon <christophe.l...@st.com> >>>> >>>> Handle corner cases where the addition of the rounding constant could >>>> cause overflows. >>> >>> After applying this patch, I get the following gcc warning: >>> CC translate.o >>> cc1: warnings being treated as errors >>> qemu/target-arm/translate.c: In function ‘disas_neon_data_insn’: >>> qemu/target-arm/translate.c:4212: error: ‘imm’ may be used uninitialized in >>> this function >>> make: *** [translate.o] Error 1 >>> >> >> Which GCC version are you using? I don't have such a warning (using >> GCC-4.5.1 on x86_64). >> > > I get this error with GCC 4.3.5, GCC 4.4.5, GCC 4.5.2 and GCC 4.6.0 > (r169270). This is also on x86_64. >
Well, I can't reproduce this error :-( For the record, I configure with --target-list=arm-softmmu,arm-linux-user --disable-bluez --enable-debug --disable-sdl and point --host-cc and --cc to GCC-4.5.1. In verbose mode, I confirm that GCC is invoked with -Werror -m64 -Wstrict-prototypes -Wredundant-decls -Wall -Wundef -Wendif-labels -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fstack-protector-all -Wmissing-include-dirs -Wempty-body -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wold-style-declaration -Wold-style-definition -Wtype-limits I have tried from a freshly cloned qemu.git, and I have no error. Can you send me your translate.c & translate.i (pre-processed by GCC's C-preprocesssor with -E option) Christophe.
