0341258af7
Recent commits ensure types are correctly stored in SwigType *. In
particular template parameters are enclosed within '<(' and ')>'.
Now we can confidently handle template parameters as really being
delimited as such to fix an infinite loop handling template expressions
containing '<' or '>'. The previous implementation only assumed
template parameters were delimited by '<' and '>'.
Issue #1037
108 lines
4.9 KiB
Text
108 lines
4.9 KiB
Text
Below are the changes for the current release.
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See the CHANGES file for changes in older releases.
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See the RELEASENOTES file for a summary of changes in each release.
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Issue # numbers mentioned below can be found on Github. For more details, add
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the issue number to the end of the URL: https://github.com/swig/swig/issues/
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Version 4.2.0 (in progress)
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===========================
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2022-11-22: wsfulton
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#1037 Fix seg fault handling template parameter expressions containing '<='.
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2022-11-18: wsfulton
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Duplicate class template instantiations via %template now issue a warning and are ignored.
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%template(Aint) A<int>;
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%template(Aint2) A<int>; // Now ignored and issues a warning
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example.i:7: Warning 404: Duplicate template instantiation of 'A< int >' with name 'Aint2' ignored,
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example.i:6: Warning 404: previous instantiation of 'A< int >' with name 'Aint'.
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A single empty template instantiation before a named instantiation is the one exception
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for allowing duplicate template instantiations as the empty template instantation does not
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create a wrapper for the template, it merely adds the instantiation into SWIG's internal
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type system.
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Duplicate empty template instantiations are quietly ignored.
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%template() B<int>;
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%template(Bint) B<int>; // OK
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%template() C<int>;
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%template() C<int>; // Quietly ignored now
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%template(Cint) C<int>; // OK
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Note that default template parameters are considered when looking for duplicates such as:
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template <typename T, typename U = short> struct D {};
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%template(Dint) D<int>;
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%template(Dintshort) D<int, short>;
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example.i:7: Warning 404: Duplicate template instantiation of 'D< int,short >' with name 'Dintshort' ignored,
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example.i:6: Warning 404: previous instantiation of 'D< int >' with name 'Dint'.
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Note that the following always was ignored, but that was because the chosen name was a
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duplicate rather than the template being a duplicate:
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%template(Eint) E<int>;
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%template(Eint) E<int>; // Always has been ignored as a redefined identifier
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The old warning was:
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example.i:7: Warning 302: Identifier 'Eint' redefined (ignored) (Renamed from 'E< int >'),
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example.i:6: Warning 302: previous definition of 'Eint' (Renamed from 'E< int >').
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*** POTENTIAL INCOMPATIBILITY ***
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2022-11-05: wsfulton
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#2417 Fix -swiglib for Windows when building with CMake.
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2022-11-02: wsfulton
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#2418 Fix infinite loop handling non-type template parameters.
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Fixes infinite loop due to () brackets in a non-type template
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parameter containing an expression.
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2022-10-28: wsfulton
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[R] R rtypecheck typemaps
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Further switch to use rtypecheck typemaps instead of hard coded logic.
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The full switch to typemaps is deferred until swig-4.2 as it can't be fully
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backwards compatible. For now a warning is provided to help the
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transition. It provides the full typemap that should be placed into
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a user's interface file, for example:
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%typemap("rtype") int32_t * "integer"
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void testmethod(int32_t * i);
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void testmethod();
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If there is no rtypecheck typemap for int32_t *, the warning shown is:
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example.i:7: Warning 750: Optional rtypecheck code is deprecated. Add the
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following typemap to fix as the next version of SWIG will not work without it:
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%typemap("rtypecheck") int32_t * %{ (is.integer($arg) || is.numeric($arg)) %}
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The warning is shown for any code that previously used "numeric", "integer" or
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"character" for the rtype typemap. Copying the rtypecheck typemap as
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shown into the user interface file will provide the appropriate fix and
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the warning will disappear. This is important to do as swig-4.2 will
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not be able to provide this helpful warning.
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2022-10-27: wsfulton
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[R] Allow NULL to be used in overloaded functions taking shared_ptr.
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Also fixes special variable $argtype expansion in rtypecheck typemaps.
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2022-10-26: wsfulton
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[R] Improve R wrapper error message when calling overloaded methods
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when incorrect types passed are passed to the overloaded methods.
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Old unhelpful error message:
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Error in f(...) : could not find function "f"
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Example of new improved error message:
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Error in use_count(k) :
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cannot find overloaded function for use_count with argtypes (NULL)
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2022-10-26: wsfulton
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[R] #2386 Fix memory leak in R shared_ptr wrappers.
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Fix leak when a cast up a class inheritance chain is required.
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