From: Sam Ravnborg <sam@xxxxxxxxxxxx> Date: Sat, 27 Dec 2008 10:24:04 +0100 > So it looks like my gcc does not promote: > ((tagval & 0x0fffffff00000000UL) >> 19UL) to unsigned long long int > but your gcc does? > > My gcc (build with Dan Kegel's crosstool): > $ /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/bin/sparc64-unknown-linux-gnu-gcc -v > Reading specs from /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/lib/gcc/sparc64-unknown-linux-gnu/3.4.5/specs > Configured with: /home/sam/devel/crosstool-0.43/build/sparc64-unknown-linux-gnu/gcc-3.4.5-glibc-2.3.6/gcc-3.4.5/configure --target=sparc64-unknown-linux-gnu --host=i686-host_pc-linux-gnu --prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu --disable-multilib --with-cpu=ultrasparc3 --enable-cxx-flags=-mcpu=ultrasparc3 --with-headers=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu/include --with-local-prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu --disable-nls --enable-threads=posix --enable-symvers=gnu --enable-__cxa_atexit --enable-languages=c --enable-shared --enable-c99 --enable-long-long > Thread model: posix > gcc version 3.4.5 I'm using a native gcc-4.1.3 here: gcc (GCC) 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) When you cross build 32-bit to 64-bit, a small but non-zero number of warning checks and optimizations are not performed and I think that is what you're hitting here. -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
