Session.get_libgmt_func: Let restype default to C int type and use None for void - #4859
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Session.get_libgmt_func: Let restype default to C int type and use None for void#4859seisman wants to merge 1 commit into
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- Read the shared library directly from the module-level '_libgmt' instead of lazily copying it onto 'self._libgmt', which nothing ever reassigned. - Default 'restype' to 'ctypes.c_int' (already ctypes' default) so that passing 'restype=None' means a void return, as it does in ctypes. All 17 call sites pass 'restype' explicitly, so behavior is unchanged. - Fix the 'restype' docstring: "the input returned" -> "the value returned", and move its type into the signature to match the other parameters. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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This PR simplifies the
Session.get_libgmt_funcand fixes a minor issue:self._libgmtis assigned but not used. It was useful in old versions, but not needed after we load the gGMT library globally after Improve performance by avoiding loading the GMT library repeatedly #2930.ctypesassumes function return the Cinttype (xref: https://docs.python.org/3/library/ctypes.html#return-types), and settingrestype=Noneis equivalent to settingrestype=ctp.c_void_p(xref: https://docs.python.org/3/library/ctypes.html#return-types). However, inSession.get_libgmt_func,restype=Nonemeans not to changerestype, making the behavior inconsistent with thectypes's default behavior. This PR fixes it. It doesn't break anything, mainly because we userestype=ctp.c_void_pwhen calling this method.Detected and fixed by Claude; Reviewed by @seisman.