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From: bam@snoopy.apana.org.au To: gcc-gnats@gcc.gnu.org, debian-gcc@lists.debian.org Subject: ada/6911: sin/cos broken on i386 Date: Sun, 02 Jun 2002 17:46:00 -0000 [thread overview] Message-ID: <20020603003952.CB0A3CC38@scrooge.chocbit.org.au> (raw) >Number: 6911 >Category: ada >Synopsis: Sin and Cos returns bad result or exception >Confidential: no >Severity: critical >Priority: medium >Responsible: unassigned >State: open >Class: wrong-code >Submitter-Id: net >Arrival-Date: Sun Jun 02 17:46:00 PDT 2002 >Closed-Date: >Last-Modified: >Originator: bam@snoopy.apana.org.au >Release: 3.1 (Debian) (Debian unstable) >Organization: The Debian Project >Environment: System: Debian GNU/Linux (unstable) Architecture: i686 Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed |/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad) ||/ Name Version Description +++-==============-==============-============================================ ii gcc-3.1 3.1-2 The GNU C compiler. ii g++-3.1 3.1-2 The GNU C++ compiler. ii libstdc++4 3.1-2 The GNU stdc++ library version 3 ii libstdc++4-dev 3.1-2 The GNU stdc++ library version 3 (developmen ii binutils 2.12.90.0.7-1 The GNU assembler, linker and binary utiliti ii libc6 2.2.5-6 GNU C Library: Shared libraries and Timezone host: i386-linux configured with: /mnt/data/gcc-3.1/gcc-3.1-3.1ds2/src/configure -v --enable-languages=c,c++,java,f77,proto,objc,ada --prefix=/usr --mandir=$\(prefix\)/share/man --infodir=$\(prefix\)/share/info --with-gxx-include-dir=$\(prefix\)/include/g++-v3-3.1 --enable-shared --with-system-zlib --enable-long-long --enable-nls --without-included-gettext --enable-clocale=gnu --enable-threads=posix --enable-java-gc=boehm --enable-objc-gc i386-linux >Description: [ Reported to the Debian BTS as report #148529. Please CC 148529@bugs.debian.org on replies. Log of report can be found at http://bugs.debian.org/148529 ] When I try to call sin(x.xx) in my test program, it seems to return different incorrect results every time. Sometimes I get NaN returned (at least thats what gdb says; Float'Image gives "0.E+05"); sometimes it returns 0, other times it generates an exception (raised CONSTRAINT_ERROR : s-imgrea.adb:236). Whats weird is that the results of the first call depend on the total number of calls that appear after the given point in the program (or something like that). >How-To-Repeat: The simple source code can be found in the existing bug report, at http://bugs.debian.org/148529. If you have problems accessing this, I can resend it to you. >Fix: Use sparc instead of i386 (well... hardly a fix... but reportedly it does work). >Release-Note: >Audit-Trail: >Unformatted:
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