Known problem. See http://www.valgrind.org/docs/manual/manual-core.html#manual-core.limits bullet point 8 for details.
J On Wednesday 12 August 2009, Tom Vercauteren wrote: > Hi all, > > I encountered a strange behavior when using the cyl_bessel_i from boost: > http://www.boost.org/doc/libs/1_39_0/libs/math/doc/sf_and_dist/html/math_to >olkit/special/bessel/mbessel.html > > When running within valgrind, the following code > > boost::math::cyl_bessel_i( 2, 0.82995 ) > > returns a NaN instead of something close to 0.0912 as correctly > returned outside of valgrind. Could this be a valgrind issue, or would > you rather have me report this to the boost mailing list? > > Below is a simple (but requiring boost) unit test for this issue and > some infomation about my setup. > > Thank you for your help. > > Best regards, > Tom Vercauteren > > > /////// Unit test /////// > > #include <boost/math/special_functions/bessel.hpp> > int main() > { > // boost::math::cyl_bessel_i( 2, 0.82995 ) should be close to 0.0912 > assert( isnan( boost::math::cyl_bessel_i( 2, 0.82995 ) ) == 0 ); > } > > ///// End unit test //// > > > //// Commands I tried //// > > > g++-4.1 -O0 -Wall -Wconversion -I > > /usr/local/boost_1_39_0/include/boost-1_39/ > > boost_cyl_bessel_i_valgrind_bug_test.cpp -o > > boost_cyl_bessel_i_valgrind_bug_test > > ./boost_cyl_bessel_i_valgrind_bug_test > > pass > > > valgrind ./boost_cyl_bessel_i_valgrind_bug_test > > fail > > > g++-4.1 -O2 -Wall -Wconversion -I > > /usr/local/boost_1_39_0/include/boost-1_39/ > > boost_cyl_bessel_i_valgrind_bug_test.cpp -o > > boost_cyl_bessel_i_valgrind_bug_test > > ./boost_cyl_bessel_i_valgrind_bug_test > > pass > > > valgrind ./boost_cyl_bessel_i_valgrind_bug_test > > fail > > > g++-4.3 -O0 -Wall -Wconversion -I > > /usr/local/boost_1_39_0/include/boost-1_39/ > > boost_cyl_bessel_i_valgrind_bug_test.cpp -o > > boost_cyl_bessel_i_valgrind_bug_test > > ./boost_cyl_bessel_i_valgrind_bug_test > > pass > > > valgrind ./boost_cyl_bessel_i_valgrind_bug_test > > fail > > > g++-4.3 -O2 -Wall -Wconversion -I > > /usr/local/boost_1_39_0/include/boost-1_39/ > > boost_cyl_bessel_i_valgrind_bug_test.cpp -o > > boost_cyl_bessel_i_valgrind_bug_test > > ./boost_cyl_bessel_i_valgrind_bug_test > > pass > > > valgrind ./boost_cyl_bessel_i_valgrind_bug_test > > fail > > //// End commands I tried //// > > > /// Version information /// > > > uname -a > > Linux oahu 2.6.28-15-generic #48-Ubuntu SMP Wed Jul 29 08:54:56 UTC > 2009 i686 GNU/Linux > > > g++-4.1 --version > > g++-4.1 (GCC) 4.1.3 20080623 (prerelease) (Ubuntu 4.1.2-24ubuntu1) > Copyright (C) 2006 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. There is NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > > g++-4.3 --version > > g++-4.3 (Ubuntu 4.3.3-5ubuntu4) 4.3.3 > Copyright (C) 2008 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. There is NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > > valgrind --version > > valgrind-3.4.1-Debian > > /// End version information /// > > > //// Full valgrind output example //// > > > g++ -O0 -Wall -Wconversion -I > > /usr/local/mkt-dev/install/boost_1_39_0/include/boost-1_39/ > > boost_cyl_bessel_i_valgrind_bug_test.cpp -o > > boost_cyl_bessel_i_valgrind_bug_test valgrind -v > > ./boost_cyl_bessel_i_valgrind_bug_test > > ==28028== Memcheck, a memory error detector. > ==28028== Copyright (C) 2002-2008, and GNU GPL'd, by Julian Seward et al. > ==28028== Using LibVEX rev 1884, a library for dynamic binary translation. > ==28028== Copyright (C) 2004-2008, and GNU GPL'd, by OpenWorks LLP. > ==28028== Using valgrind-3.4.1-Debian, a dynamic binary > instrumentation framework. > ==28028== Copyright (C) 2000-2008, and GNU GPL'd, by Julian Seward et al. > ==28028== > --28028-- Command line > --28028-- ./boost_cyl_bessel_i_valgrind_bug_test > --28028-- Startup, with flags: > --28028-- -v > --28028-- Contents of /proc/version: > --28028-- Linux version 2.6.28-15-generic (bui...@rothera) (gcc > version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #48-Ubuntu SMP Wed Jul 29 > 08:54:56 UTC 2009 > --28028-- Arch and hwcaps: X86, x86-sse1-sse2 > --28028-- Page sizes: currently 4096, max supported 4096 > --28028-- Valgrind library directory: /usr/lib/valgrind > --28028-- Reading syms from /lib/ld-2.9.so (0x4000000) > --28028-- Reading debug info from /lib/ld-2.9.so .. > --28028-- .. CRC mismatch (computed 049232cc wanted 022486d8) > --28028-- object doesn't have a symbol table > --28028-- Reading syms from > /home/tom/dev/Sandbox/boost_cyl_bessel_i_valgrind_bug_test (0x8048000) > --28028-- Reading syms from /usr/lib/valgrind/x86-linux/memcheck > (0x38000000) --28028-- object doesn't have a dynamic symbol table > --28028-- Reading suppressions file: /usr/lib/valgrind/default.supp > --28028-- Reading syms from > /usr/lib/valgrind/x86-linux/vgpreload_core.so (0x4020000) > --28028-- Reading syms from > /usr/lib/valgrind/x86-linux/vgpreload_memcheck.so (0x4023000) > --28028-- Reading syms from /usr/lib/libstdc++.so.6.0.10 (0x404c000) > --28028-- Reading debug info from /usr/lib/libstdc++.so.6.0.10 .. > --28028-- .. CRC mismatch (computed 87794c5d wanted bcd37461) > --28028-- object doesn't have a symbol table > --28028-- Reading syms from /lib/tls/i686/cmov/libm-2.9.so (0x413b000) > --28028-- Reading debug info from /lib/tls/i686/cmov/libm-2.9.so .. > --28028-- .. CRC mismatch (computed 9d3c94d0 wanted 85a674c7) > --28028-- object doesn't have a symbol table > --28028-- Reading syms from /lib/libgcc_s.so.1 (0x4162000) > --28028-- Reading debug info from /lib/libgcc_s.so.1 .. > --28028-- .. CRC mismatch (computed 224ab3f8 wanted 89276151) > --28028-- object doesn't have a symbol table > --28028-- Reading syms from /lib/tls/i686/cmov/libc-2.9.so (0x4171000) > --28028-- Reading debug info from /lib/tls/i686/cmov/libc-2.9.so .. > --28028-- .. CRC mismatch (computed 7ee64c88 wanted 8d898f0d) > --28028-- object doesn't have a symbol table > --28028-- REDIR: 0x41e8a60 (rindex) redirected to 0x4027330 (rindex) > --28028-- REDIR: 0x41e85e0 (strlen) redirected to 0x40276e0 (strlen) > --28028-- REDIR: 0x41ea850 (memcpy) redirected to 0x4027b50 (memcpy) > --28028-- REDIR: 0x41e8800 (strncmp) redirected to 0x4027950 (strncmp) > --28028-- REDIR: 0x41ea530 (stpcpy) redirected to 0x4028380 (stpcpy) > --28028-- REDIR: 0x41ea3a0 (mempcpy) redirected to 0x4028720 (mempcpy) > --28028-- REDIR: 0x41e4930 (malloc) redirected to 0x4026f20 (malloc) > --28028-- REDIR: 0x41ed390 (strchrnul) redirected to 0x40286c0 (strchrnul) > --28028-- REDIR: 0x41e2520 (free) redirected to 0x4025d40 (free) > --28028-- REDIR: 0x41ea340 (memset) redirected to 0x40285f0 (memset) > --28028-- REDIR: 0x41e4de0 (realloc) redirected to 0x4027030 (realloc) > boost_cyl_bessel_i_valgrind_bug_test: > boost_cyl_bessel_i_valgrind_bug_test.cpp:9: int main(): Assertion > `isnan( boost::math::cyl_bessel_i( 2, 0.82995 ) ) == 0' failed. > ==28028== > ==28028== Process terminating with default action of signal 6 > (SIGABRT): dumping core > ==28028== at 0x40007F2: (within /lib/ld-2.9.so) > ==28028== by 0x419E097: abort (in /lib/tls/i686/cmov/libc-2.9.so) > ==28028== by 0x41955CD: __assert_fail (in > /lib/tls/i686/cmov/libc-2.9.so) ==28028== by 0x804AD8F: main (in > /home/tom/dev/Sandbox/boost_cyl_bessel_i_valgrind_bug_test) > ==28028== > ==28028== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 17 from 1) > --28028-- > --28028-- supp: 17 Debian libc6 (2.9.x) stripped dynamic linker > ==28028== malloc/free: in use at exit: 0 bytes in 0 blocks. > ==28028== malloc/free: 3 allocs, 3 frees, 569 bytes allocated. > ==28028== > ==28028== All heap blocks were freed -- no leaks are possible. > --28028-- memcheck: sanity checks: 2 cheap, 2 expensive > --28028-- memcheck: auxmaps: 0 auxmap entries (0k, 0M) in use > --28028-- memcheck: auxmaps_L1: 0 searches, 0 cmps, ratio 0:10 > --28028-- memcheck: auxmaps_L2: 0 searches, 0 nodes > --28028-- memcheck: SMs: n_issued = 11 (176k, 0M) > --28028-- memcheck: SMs: n_deissued = 0 (0k, 0M) > --28028-- memcheck: SMs: max_noaccess = 65535 (1048560k, 1023M) > --28028-- memcheck: SMs: max_undefined = 0 (0k, 0M) > --28028-- memcheck: SMs: max_defined = 40 (640k, 0M) > --28028-- memcheck: SMs: max_non_DSM = 11 (176k, 0M) > --28028-- memcheck: max sec V bit nodes: 0 (0k, 0M) > --28028-- memcheck: set_sec_vbits8 calls: 0 (new: 0, updates: 0) > --28028-- memcheck: max shadow mem size: 480k, 0M > --28028-- translate: fast SP updates identified: 3,175 ( 85.6%) > --28028-- translate: generic_known SP updates identified: 269 ( 7.2%) > --28028-- translate: generic_unknown SP updates identified: 264 ( 7.1%) > --28028-- tt/tc: 5,657 tt lookups requiring 5,794 probes > --28028-- tt/tc: 5,657 fast-cache updates, 2 flushes > --28028-- transtab: new 2,821 (67,794 -> 1,028,579; ratio > 151:10) [0 scs] > --28028-- transtab: dumped 0 (0 -> ??) > --28028-- transtab: discarded 0 (0 -> ??) > --28028-- scheduler: 231,604 jumps (bb entries). > --28028-- scheduler: 2/3,045 major/minor sched events. > --28028-- sanity: 3 cheap, 2 expensive checks. > --28028-- exectx: 769 lists, 466 contexts (avg 0 per list) > --28028-- exectx: 558 searches, 222 full compares (397 per 1000) > --28028-- exectx: 0 cmp2, 38 cmp4, 0 cmpAll > --28028-- errormgr: 6 supplist searches, 6 comparisons during search > --28028-- errormgr: 17 errlist searches, 38 comparisons during search > Aborted > > --------------------------------------------------------------------------- >--- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 > 30-Day trial. Simplify your report design, integration and deployment - and > focus on what you do best, core application coding. Discover what's new > with Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Valgrind-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/valgrind-users ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Valgrind-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/valgrind-users
