'double free or corruption (out)' when running example code with libcmaes as shared library

[saihv]

I am trying to use libcmaes.so as a shared library through CMake, so I installed it to a specific location and imported it into my own project using the location as below:

SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3 -std=c++11 -mfma")

add_library(libcmaes SHARED IMPORTED)
set_property(TARGET libcmaes PROPERTY IMPORTED_LOCATION "libcmaes/install/lib/libcmaes.so")

target_link_libraries(nbvplanner libcmaes)

In my project, I tried to run the sample code that's given in the README. While the code appears to run successfully, I get a 'double free or corruption' error at termination.

Output:

best solution: best solution => f-value=2.52029e-15 / fevals=2810 / sigma=1.91516e-07 / iter=281 / elaps=7ms / x= 2.14112e-08 -1.14725e-08 -1.84194e-08  1.60249e-08  1.65269e-08 -1.96509e-08 -1.07566e-09 -2.31984e-09  2.53547e-08  5.04625e-09
optimization took 0.007 seconds
*** Error in `./nbvplanner': double free or corruption (out): 0x0000000001202320 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x7f46e0bbe7e5]
/lib/x86_64-linux-gnu/libc.so.6(+0x8037a)[0x7f46e0bc737a]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x4c)[0x7f46e0bcb53c]
/home/sai/code/nbvplanner/lib/libcmaes/install/lib/libcmaes.so.0(_ZN8libcmaes12CMASolutionsD1Ev+0x13)[0x7f46e16e91b3]

First few lines of valgrind output:

best solution: best solution => f-value=4.71486e-16 / fevals=2980 / sigma=1.10926e-07 / iter=298 / elaps=336ms / x=-7.32494e-10  6.19359e-09 -5.35323e-09  4.65318e-10  5.68156e-10  1.07733e-08  1.03594e-08 -7.60523e-09  8.57882e-09 -6.96962e-09
optimization took 0.336 seconds
==7953== Invalid free() / delete / delete[] / realloc()
==7953==    at 0x4C2EDEB: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==7953==    by 0x507A1B2: libcmaes::CMASolutions::~CMASolutions() (in /home/sai/code/nbvplanner/lib/libcmaes/install/lib/libcmaes.so.0.0.0)
==7953==    by 0x4112B1: main (in /home/sai/code/nbvplanner/build/nbvplanner)
==7953==  Address 0x6e785c0 is 32 bytes inside a block of size 112 alloc'd
==7953==    at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==7953==    by 0x4156BF: libcmaes::CMASolutions::CMASolutions(libcmaes::CMASolutions const&) (in /home/sai/code/nbvplanner/build/nbvplanner)
==7953==    by 0x416391: libcmaes::CMASolutions libcmaes::cmaes<libcmaes::GenoPheno<libcmaes::NoBoundStrategy, libcmaes::NoScalingStrategy> >(std::function<double (double const*, int const&)>&, libcmaes::CMAParameters<libcmaes::GenoPheno<libcmaes::NoBoundStrategy, libcmaes::NoScalingStrategy> >&, std::function<int (libcmaes::CMAParameters<libcmaes::GenoPheno<libcmaes::NoBoundStrategy, libcmaes::NoScalingStrategy> > const&, libcmaes::CMASolutions const&)>&, std::function<Eigen::Matrix<double, -1, 1, 0, -1, 1> (double const*, int const&)>, libcmaes::CMASolutions const&, std::function<int (libcmaes::CMAParameters<libcmaes::GenoPheno<libcmaes::NoBoundStrategy, libcmaes::NoScalingStrategy> > const&, libcmaes::CMASolutions const&, std::basic_ofstream<char, std::char_traits<char> >&)>&) (in /home/sai/code/nbvplanner/build/nbvplanner)
==7953==    by 0x4111D8: main (in /home/sai/code/nbvplanner/build/nbvplanner)
==7953== 

I was wondering if anyone had any idea why this might be happening?

[beniz]

Hi, you might want to remove the -mfma just in case it gets in the way. Other than that you may want to share the nvbplanner code so see how you are using the lib.

[saihv]

Removing -mfma did the trick (I thought that was needed because it was mentioned in some other issues regarding seg faults, but apparently not). Thank you!