[Gretl-users] Re: std::string will cause 1.Gretl to delete all files in a folder and cause 2.correlogram_plot to not show plot C/C++ API

On Thu, 29 Oct 2020, riles(a)triton.net wrote: Actually no; the line in question in gretl_matrix.h was already present in the 2020b release. I guess the difference must lie with the compiler (I'm using g++ 9.3.1 here). C++ defines "complex" as a (template) class, apparently, which conflicts with the definition in C's complex.h. I've worked around this by substituting "double _Complex" for "double_complex" in gretl_matrix.h, which I think is harmless in C (according to the standard, "complex" is a macro which expands to "_Complex"). Anyway, the deletion of files issue is fixed in git. The point is that producing the plot involves the creation of temporary files in the user's "dot directory" or "dotdir" (which is supposed to be invisible to the user), and libgretl_cleanup() removes all files from that directory apart from ones that we know should not be deleted. In your setup, "dotdir" is not defined, but "workdir" is, in which case we take dotdir to equal workdir, hence workdir gets cleaned out. Now in git we check for dotdir == workdir and if that's the case we don't clean out the directory. (In normal gretl usage these directories are sure to be distinct.) I guess a workaround for older libgretl would be, just don't call libgretl_cleanup(). Allin