Compilation warnings with the newest libmatio

[arcan1s]

Hi,

With the newest libmatio I've faced with the following compilation warnings:

Scanning dependencies of target aslmatio
[ 47%] Building CXX object src/CMakeFiles/aslmatio.dir/utilities/aslMATLABCasters.cxx.o
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx: In instantiation of ‘matvar_t* matiocpp::Var::init(T*, const asl::AVec<int>&, const string&) [with T = double; matvar_t = matvar_t; std::__cxx11::string = std::__cxx11::basic_string<char>]’:
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:93:19:   required from ‘matiocpp::Var::Var(T*, unsigned int, const string&, bool) [with T = double; std::__cxx11::string = std::__cxx11::basic_string<char>]’
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:116:62:   required from here
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:76:22: warning: invalid conversion from ‘int’ to ‘matio_classes’ [-fpermissive]
  return Mat_VarCreate(name.c_str(),
                      ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:33:0:
/usr/include/matio.h:258:19: note:   initializing argument 2 of ‘matvar_t* Mat_VarCreate(const char*, matio_classes, matio_types, int, size_t*, void*, int)’
 EXTERN matvar_t  *Mat_VarCreate(const char *name,enum matio_classes class_type,
                   ^
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:76:22: warning: invalid conversion from ‘int’ to ‘matio_types’ [-fpermissive]
  return Mat_VarCreate(name.c_str(),
                      ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:33:0:
/usr/include/matio.h:258:19: note:   initializing argument 3 of ‘matvar_t* Mat_VarCreate(const char*, matio_classes, matio_types, int, size_t*, void*, int)’
 EXTERN matvar_t  *Mat_VarCreate(const char *name,enum matio_classes class_type,
                   ^
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx: In instantiation of ‘matvar_t* matiocpp::Var::init(T*, const asl::AVec<int>&, const string&) [with T = float; matvar_t = matvar_t; std::__cxx11::string = std::__cxx11::basic_string<char>]’:
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:93:19:   required from ‘matiocpp::Var::Var(T*, unsigned int, const string&, bool) [with T = float; std::__cxx11::string = std::__cxx11::basic_string<char>]’
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:122:62:   required from here
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:76:22: warning: invalid conversion from ‘int’ to ‘matio_classes’ [-fpermissive]
  return Mat_VarCreate(name.c_str(),
                      ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:33:0:
/usr/include/matio.h:258:19: note:   initializing argument 2 of ‘matvar_t* Mat_VarCreate(const char*, matio_classes, matio_types, int, size_t*, void*, int)’
 EXTERN matvar_t  *Mat_VarCreate(const char *name,enum matio_classes class_type,
                   ^
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:76:22: warning: invalid conversion from ‘int’ to ‘matio_types’ [-fpermissive]
  return Mat_VarCreate(name.c_str(),
                      ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:33:0:
/usr/include/matio.h:258:19: note:   initializing argument 3 of ‘matvar_t* Mat_VarCreate(const char*, matio_classes, matio_types, int, size_t*, void*, int)’
 EXTERN matvar_t  *Mat_VarCreate(const char *name,enum matio_classes class_type,
                   ^
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx: In instantiation of ‘matvar_t* matiocpp::Var::init(T*, const asl::AVec<int>&, const string&) [with T = int; matvar_t = matvar_t; std::__cxx11::string = std::__cxx11::basic_string<char>]’:
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:93:19:   required from ‘matiocpp::Var::Var(T*, unsigned int, const string&, bool) [with T = int; std::__cxx11::string = std::__cxx11::basic_string<char>]’
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:128:62:   required from here
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:76:22: warning: invalid conversion from ‘int’ to ‘matio_classes’ [-fpermissive]
  return Mat_VarCreate(name.c_str(),
                      ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:33:0:
/usr/include/matio.h:258:19: note:   initializing argument 2 of ‘matvar_t* Mat_VarCreate(const char*, matio_classes, matio_types, int, size_t*, void*, int)’
 EXTERN matvar_t  *Mat_VarCreate(const char *name,enum matio_classes class_type,
                   ^
/home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:76:22: warning: invalid conversion from ‘int’ to ‘matio_types’ [-fpermissive]
  return Mat_VarCreate(name.c_str(),
                      ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/utilities/aslMATLABCasters.cxx:33:0:
/usr/include/matio.h:258:19: note:   initializing argument 3 of ‘matvar_t* Mat_VarCreate(const char*, matio_classes, matio_types, int, size_t*, void*, int)’
 EXTERN matvar_t  *Mat_VarCreate(const char *name,enum matio_classes class_type,
                   ^
[ 47%] Building CXX object src/CMakeFiles/aslmatio.dir/writers/aslMATFormat.cxx.o
/home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx: In function ‘void asl::writeMAT(const string&, const asl::AbstractData&, const string&)’:
/home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx:49:35: warning: invalid conversion from ‘int’ to ‘matio_compression’ [-fpermissive]
   Mat_VarWrite(matFile,var->var, 0);
                                   ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx:26:0:
/usr/include/matio.h:300:19: note:   initializing argument 3 of ‘int Mat_VarWrite(mat_t*, matvar_t*, matio_compression)’
 EXTERN int        Mat_VarWrite(mat_t *mat,matvar_t *matvar,
                   ^
/home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx: In function ‘void asl::writeMAT(const string&, std::vector<std::pair<std::shared_ptr<asl::AbstractData>, std::__cxx11::basic_string<char> > >)’:
/home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx:66:36: warning: invalid conversion from ‘int’ to ‘matio_compression’ [-fpermissive]
    Mat_VarWrite(matFile,var->var, 0);
                                    ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx:26:0:
/usr/include/matio.h:300:19: note:   initializing argument 3 of ‘int Mat_VarWrite(mat_t*, matvar_t*, matio_compression)’
 EXTERN int        Mat_VarWrite(mat_t *mat,matvar_t *matvar,
                   ^
/home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx: In function ‘void asl::writeMAT(const string&, std::vector<std::pair<std::shared_ptr<acl::ElementBase>, std::__cxx11::basic_string<char> > >)’:
/home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx:78:36: warning: invalid conversion from ‘int’ to ‘matio_compression’ [-fpermissive]
    Mat_VarWrite(matFile,var->var, 0);
                                    ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx:26:0:
/usr/include/matio.h:300:19: note:   initializing argument 3 of ‘int Mat_VarWrite(mat_t*, matvar_t*, matio_compression)’
 EXTERN int        Mat_VarWrite(mat_t *mat,matvar_t *matvar,
                   ^
/home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx: In function ‘void asl::writeMAT(const string&, asl::Probe&, unsigned int, const string&)’:
/home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx:89:35: warning: invalid conversion from ‘int’ to ‘matio_compression’ [-fpermissive]
   Mat_VarWrite(matFile,var->var, 0);
                                   ^
In file included from /home/arcanis/libasl/src/ASL-0.1.6/src/writers/aslMATFormat.cxx:26:0:
/usr/include/matio.h:300:19: note:   initializing argument 3 of ‘int Mat_VarWrite(mat_t*, matvar_t*, matio_compression)’
 EXTERN int        Mat_VarWrite(mat_t *mat,matvar_t *matvar,
                   ^
[ 48%] Linking CXX shared library libaslmatio.so

Most of them are talking about invalid conversion from int to matio_*. Build environment:

gcc-5.3.0
libmatio-1.5.6
libasl from tarball (0.1.6)

[AvtechScientific]

Thank you, @arcan1s , for the report. matio changes its API from time to time. We will look into it, but as long as they are only warnings - the issue doesn't seem to be a critical one.

All the best!

[tbeu]

The matio API actually was kept backward-compatible since release of v1.5.0 (spring 2012).