Jarrod Hadfield
2014-Mar-14 17:56 UTC
[Rd] Conditional jump or move depends on uninitialised value(s)
Hi, I'm using valgrind to check over some C/C++ code for an R library. I'm getting the report (see below), but can't track down the uninitialised value(s). I tried using --track-origins=yes in valgrind which gives: ==28258== Uninitialised value was created by a stack allocation ==28258== at 0xEE33D98: ??? (in /usr/lib64/R/lib/libRlapack.so) I presume the problem is an uninitialised value being used in my code, rather than in libRlapack, but there is a better way of tracking down where it is? Cheers, Jarrod> R -d "valgrind --tool=memcheck --leak-check=full --track-origins=yes"==28258== Conditional jump or move depends on uninitialised value(s) ==28258== at 0xEE87208: dstemr_ (in /usr/lib64/R/lib/libRlapack.so) ==28258== by 0xEE7F39B: dsyevr_ (in /usr/lib64/R/lib/libRlapack.so) ==28258== by 0x15B23BD9: ??? (in /usr/lib64/R/modules/lapack.so) ==28258== by 0x15B28397: ??? (in /usr/lib64/R/modules/lapack.so) ==28258== by 0x35CA4BFEAC: ??? (in /usr/lib64/R/lib/libR.so) ==28258== by 0x35CA4C8A1F: Rf_eval (in /usr/lib64/R/lib/libR.so) ==28258== by 0x35CA4BB310: Rf_applyClosure (in /usr/lib64/R/lib/libR.so) ==28258== by 0x35CA4C58F9: ??? (in /usr/lib64/R/lib/libR.so) ==28258== by 0x35CA4C8A1F: Rf_eval (in /usr/lib64/R/lib/libR.so) ==28258== by 0x35CA4BB310: Rf_applyClosure (in /usr/lib64/R/lib/libR.so) ==28258== by 0x35CA4C8ACC: Rf_eval (in /usr/lib64/R/lib/libR.so) ==28258== by 0x35CA4CAEE7: ??? (in /usr/lib64/R/lib/libR.so) ==28258== Uninitialised value was created by a stack allocation ==28258== at 0xEE33D98: ??? (in /usr/lib64/R/lib/libRlapack.so) -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
Prof Brian Ripley
2014-Mar-14 19:00 UTC
[Rd] Conditional jump or move depends on uninitialised value(s)
On 14/03/2014 17:56, Jarrod Hadfield wrote:> Hi, > > I'm using valgrind to check over some C/C++ code for an R library. I'mR package?> getting the report (see below), but can't track down the uninitialised > value(s). I tried using --track-origins=yes in valgrind which gives: > > ==28258== Uninitialised value was created by a stack allocation > ==28258== at 0xEE33D98: ??? (in /usr/lib64/R/lib/libRlapack.so) > > I presume the problem is an uninitialised value being used in my code, > rather than in libRlapack, but there is a better way of tracking down > where it is?You need debug symbols. Maybe available for your unstated platform, or build a version of R with an internal LAPACK. I doubt this is you: 'Writing R Extensions' has 'Note that memory access errors may be seen with LAPACK, BLAS and Java-using packages: some at least of these seem to be intentional, and some are related to passing characters to Fortran.' Also, it is entirely possible that this is a non-current version of LAPACK: quite a few things like this have been plugged recently. For example, Fedora currently has 3.4.2 and 3.5.0 has been out for a lot longer than Fedora 20.> > Cheers, > > Jarrod > >> R -d "valgrind --tool=memcheck --leak-check=full --track-origins=yes" > > ==28258== Conditional jump or move depends on uninitialised value(s) > ==28258== at 0xEE87208: dstemr_ (in /usr/lib64/R/lib/libRlapack.so) > ==28258== by 0xEE7F39B: dsyevr_ (in /usr/lib64/R/lib/libRlapack.so) > ==28258== by 0x15B23BD9: ??? (in /usr/lib64/R/modules/lapack.so) > ==28258== by 0x15B28397: ??? (in /usr/lib64/R/modules/lapack.so) > ==28258== by 0x35CA4BFEAC: ??? (in /usr/lib64/R/lib/libR.so) > ==28258== by 0x35CA4C8A1F: Rf_eval (in /usr/lib64/R/lib/libR.so) > ==28258== by 0x35CA4BB310: Rf_applyClosure (in /usr/lib64/R/lib/libR.so) > ==28258== by 0x35CA4C58F9: ??? (in /usr/lib64/R/lib/libR.so) > ==28258== by 0x35CA4C8A1F: Rf_eval (in /usr/lib64/R/lib/libR.so) > ==28258== by 0x35CA4BB310: Rf_applyClosure (in /usr/lib64/R/lib/libR.so) > ==28258== by 0x35CA4C8ACC: Rf_eval (in /usr/lib64/R/lib/libR.so) > ==28258== by 0x35CA4CAEE7: ??? (in /usr/lib64/R/lib/libR.so) > ==28258== Uninitialised value was created by a stack allocation > ==28258== at 0xEE33D98: ??? (in /usr/lib64/R/lib/libRlapack.so) > >-- Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595
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