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Create %append_output compatibility wrappers for SWIG 4.3

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Unfortunately we are affected by the backwards-incompatible change introduced by https://github.com/swig/swig/pull/2907

These wrappers will be needed to fix tests on systems using SWIG 4.3 or later, e.g. Ubuntu Plucky.

Signed-off-by: Ryan Lee <ryan.lee@canonical.com>
This commit is contained in:
Ryan Lee 2025-01-24 11:47:11 -08:00
parent dcce4bc62f
commit 1b46ab10fd
1 changed files with 23 additions and 0 deletions
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23
libraries/libapparmor/swig/SWIG/libapparmor.i
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@ -17,6 +17,29 @@
%include <stdint.i>
%include <exception.i>
/*
* SWIG 4.3 included https://github.com/swig/swig/pull/2907 to distinguish
* between Py_None being returned as a default void and Py_None being returned
* as the equivalent of C NULL. Unfortunately, this turns into an API breaking
* change with our use of %append_output when we want the Python function to
* return something even when the C function has a void return type. Thus, we
* need an additional macro to smooth over the differences. Include all affected
* languages, even ones we don't build bindings for, for completeness.
*/
#if SWIG_VERSION >= 0x040300
#ifdef SWIGPYTHON
#define ISVOID_APPEND_OUTPUT(value) {$result = SWIG_Python_AppendOutput($result, value, 1);}
#elif defined(SWIGRUBY)
#define ISVOID_APPEND_OUTPUT(value) {$result = SWIG_Ruby_AppendOutput($result, value, 1);}
#elif defined(SWIGPHP)
#define ISVOID_APPEND_OUTPUT(value) {$result = SWIG_Php_AppendOutput($result, value, 1);}
#else
#define ISVOID_APPEND_OUTPUT(value) %append_output(value)
#endif
#else
#define ISVOID_APPEND_OUTPUT(value) %append_output(value)
#endif
%newobject parse_record;
%delobject free_record;
/*