Your message dated Tue, 23 Jun 2015 07:24:48 +0000 with message-id <e1z7izc-0001ty...@franck.debian.org> and subject line Bug#789156: Removed package(s) from unstable has caused the Debian Bug report #452431, regarding g++-4.2: two cases of bad optimization in x86 (i686) with long long in 32bit to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact ow...@bugs.debian.org immediately.) -- 452431: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=452431 Debian Bug Tracking System Contact ow...@bugs.debian.org with problems
--- Begin Message ---Package: g++-4.2 Version: 4.2.2-3 Severity: minor the following snippet of code shows two cases of bad optimization behaviour on gcc 4.1.3 and 4.2.3 (debian unstable). #define PTS_MASK ((1LL << 33)-1) #define PTS_WRAP (1LL << 33) #define PTS_WRAP2 (1LL << 32) long long ptsdiff_mod2_33(long long a, long long b) { long long d = (b + PTS_WRAP - a) & PTS_MASK; return (d >= PTS_WRAP2) ? d - PTS_WRAP : d; } the following assembler code is generated: .file "test4.cpp" .text .align 2 .p2align 4,,15 .globl _Z15ptsdiff_mod2_33xx .type _Z15ptsdiff_mod2_33xx, @function _Z15ptsdiff_mod2_33xx: .LFB2: pushl %ebp .LCFI0: movl %esp, %ebp .LCFI1: movl 16(%ebp), %eax movl 20(%ebp), %edx pushl %ebx .LCFI2: addl $0, %eax adcl $2, %edx subl 8(%ebp), %eax sbbl 12(%ebp), %edx movl %eax, %ecx movl %edx, %ebx andl $1, %ebx cmpl $0, %ebx jl .L2 jle .L2 addl $0, %ecx adcl $-2, %ebx .L2: movl %ebx, %edx movl %ecx, %eax popl %ebx popl %ebp ret .LFE2: .size _Z15ptsdiff_mod2_33xx, .-_Z15ptsdiff_mod2_33xx .globl __gxx_personality_v0 .ident "GCC: (GNU) 4.1.3 20071019 (prerelease) (Debian 4.1.2-17)" .section .note.GNU-stack,"",@progbits two obvious optimization faults: 1) addl $0, reg is totally pointless 2) jl label followed by jle label is equivalent to just jle label i reported that bug too to gcc, but their mailer blocked the mail. -- System Information: Debian Release: lenny/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: i386 (i686) Kernel: Linux 2.6.23.1 (PREEMPT) Locale: LANG=de_DE.UTF-8@euro, LC_CTYPE=de_DE.UTF-8@euro (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages g++-4.2 depends on: ii gcc-4.2 4.2.2-3 The GNU C compiler ii gcc-4.2-base 4.2.2-3 The GNU Compiler Collection (base ii libc6 2.6.1-6 GNU C Library: Shared libraries ii libstdc++6-4.2-dev 4.2.2-3 The GNU Standard C++ Library v3 (d g++-4.2 recommends no packages. -- no debconf information
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--- Begin Message ---Version: 4.7.4-3+rm Dear submitter, as the package gcc-4.7 has just been removed from the Debian archive unstable we hereby close the associated bug reports. We are sorry that we couldn't deal with your issue properly. For details on the removal, please see https://bugs.debian.org/789156 The version of this package that was in Debian prior to this removal can still be found using http://snapshot.debian.org/. This message was generated automatically; if you believe that there is a problem with it please contact the archive administrators by mailing ftpmas...@ftp-master.debian.org. Debian distribution maintenance software pp. Luca Falavigna (the ftpmaster behind the curtain)
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