Package: gcc-4.8 Version: 4.8.2-12 Severity: important webkitgtk 2.3.4 FTBFS with the latest gcc-4.8:
../Source/WTF/wtf/Atomics.h: Assembler messages: ../Source/WTF/wtf/Atomics.h:300: Error: bad register name `%sil' [...] You can see the full log here: https://buildd.debian.org/status/fetch.php?pkg=webkitgtk&arch=i386&ver=2.3.4-1&stamp=1389693794 My understanding is that gcc is incorrectly producing x86-64 registers when generating x86 code. I managed to narrow it down with a pre-processed version of the CodeBlock.cpp source file from webkit (I can attach it or post it somewhere, it's ~400KB of compressed code): $ gcc -O1 -m32 --std=c++11 -c CodeBlock.ii ../Source/WTF/wtf/Atomics.h: Assembler messages: ../Source/WTF/wtf/Atomics.h:300: Error: bad register name `%bpl' ../Source/WTF/wtf/Atomics.h:300: Error: bad register name `%bpl' ../Source/WTF/wtf/Atomics.h:300: Error: bad register name `%dil' This works fine, though (which I don't quite understand since -frename-registers should already be enabled by -O1): $ gcc -O1 -m32 --std=c++11 -c -frename-registers CodeBlock.ii Here's the relevant part of the source file: inline bool weakCompareAndSwap(uint8_t* location, uint8_t expected, uint8_t newValue) { unsigned char result; asm volatile( "lock; cmpxchgb %3, %2\n\t" "sete %1" : "+a"(expected), "=q"(result), "+m"(*location) : "r"(newValue) : "memory" ); return result; } This upstream GCC bug is related: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10153 Although the suggestion to use '=r' instead of '=q' doesn't seem to solve the problem. Berto -- System Information: Debian Release: jessie/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.12-1-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages gcc-4.8 depends on: ii binutils 2.24-2 ii cpp-4.8 4.8.2-12 ii gcc-4.8-base 4.8.2-12 ii libc6 2.17-97 ii libcloog-isl4 0.18.1-3 ii libgcc-4.8-dev 4.8.2-12 ii libgmp10 2:5.1.3+dfsg-1 ii libisl10 0.12.1-2 ii libmpc3 1.0.1-1 ii libmpfr4 3.1.2-1 ii zlib1g 1:1.2.8.dfsg-1 Versions of packages gcc-4.8 recommends: ii libc6-dev 2.17-97 Versions of packages gcc-4.8 suggests: ii binutils [binutils-gold] 2.24-2 ii gcc-4.8-doc 4.8.2-2 pn gcc-4.8-locales <none> pn gcc-4.8-multilib <none> pn libasan0-dbg <none> pn libatomic1-dbg <none> pn libbacktrace1-dbg <none> pn libgcc1-dbg <none> pn libgomp1-dbg <none> pn libitm1-dbg <none> pn libquadmath0-dbg <none> pn libtsan0-dbg <none> -- no debconf information -- To UNSUBSCRIBE, email to debian-gcc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20140114152241.11168.43801.reportbug@perseus.local