Your message dated Wed, 27 Aug 2014 20:06:56 +0200 with message-id <53FE1E40.8000406@googlemail.com> and subject line undefined behavior has caused the Debian Bug report #757492, regarding gfortran-4.9: miscompiles int() on mips 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 owner@bugs.debian.org immediately.) -- 757492: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=757492 Debian Bug Tracking System Contact owner@bugs.debian.org with problems
--- Begin Message ---
- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: gfortran-4.9: miscompiles int() on mips
- From: Julian Taylor <jtaylor.debian@googlemail.com>
- Date: Fri, 08 Aug 2014 21:40:19 +0200
- Message-id: <[🔎] 53E527A3.9080606@googlemail.com>
Package: gfortran-4.9 Version: 4:4.9.1-1 Severity: important gfortran miscompiles int() for negative overflows leading to a build timeout of python-scipy, see #756905 below a testcase, according to https://gcc.gnu.org/onlinedocs/gfortran/INT.html the result should be -2147483648 (sid_mips-dchroot)jtaylor@gabrielli:~$ apt-cache policy gfortran gfortran: Installed: 4:4.9.1-1 Candidate: 4:4.9.1-1 Version table: *** 4:4.9.1-1 0 500 http://mirror-ubc.debian.org/debian/ sid/main mips Packages 100 /var/lib/dpkg/status (sid_mips-dchroot)jtaylor@gabrielli:~$ cat test.f90 program add implicit none real a,b,s read *, a print *, ' is ' , int(a) stop end (sid_mips-dchroot)jtaylor@gabrielli:~$ gfortran test.f90 (sid_mips-dchroot)jtaylor@gabrielli:~$ ./a.out -1e99 is 2147483647 Note: The following floating-point exceptions are signalling: IEEE_INVALID_FLAG IEEE_OVERFLOW_FLAG
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--- Begin Message ---
- To: 757492-done@bugs.debian.org
- Subject: undefined behavior
- From: Julian Taylor <jtaylor.debian@googlemail.com>
- Date: Wed, 27 Aug 2014 20:06:56 +0200
- Message-id: <53FE1E40.8000406@googlemail.com>
according to upstream it is undefined behavior, so I added a workaround to scipy.
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