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Fix function pointer to void* cast (and vice-versa) related warnings on POSIX systems

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git-svn-id: svn://localhost/ardour2/branches/3.0@8300 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Sakari Bergen 2010-12-19 23:09:30 +00:00
parent e212c8de66
commit bb7dbe6d86
1 changed files with 19 additions and 8 deletions
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27
gtk2_ardour/canvas-waveview.c
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@ -31,6 +31,12 @@
#include "canvas-waveview.h"
#include "rgb_macros.h"
/* POSIX guarantees casting between void* and function pointers, ISO C doesn't
* We can work around warnings by going one step deeper in our casts
*/
#ifdef _POSIX_VERSION
#define POSIX_FUNC_PTR_CAST(type, object) *((type*) &(object))
#endif // _POSIX_VERSION
extern void c_stacktrace();
@ -751,6 +757,7 @@ gnome_canvas_waveview_set_property (GObject *object,
item = GNOME_CANVAS_ITEM (object);
waveview = GNOME_CANVAS_WAVEVIEW (object);
void * ptr;
switch (prop_id) {
case PROP_DATA_SRC:
gnome_canvas_waveview_set_data_src (waveview, g_value_get_pointer(value));
@ -763,22 +770,26 @@ gnome_canvas_waveview_set_property (GObject *object,
break;
case PROP_LENGTH_FUNCTION:
waveview->length_function = (waveview_length_function_t) g_value_get_pointer(value);
ptr = g_value_get_pointer(value);
waveview->length_function = POSIX_FUNC_PTR_CAST(waveview_length_function_t, ptr);
redraw = TRUE;
break;
case PROP_SOURCEFILE_LENGTH_FUNCTION:
waveview->sourcefile_length_function = (waveview_sourcefile_length_function_t) g_value_get_pointer(value);
ptr = g_value_get_pointer(value);
waveview->sourcefile_length_function = POSIX_FUNC_PTR_CAST(waveview_sourcefile_length_function_t, ptr);
redraw = TRUE;
break;
case PROP_PEAK_FUNCTION:
waveview->peak_function = (waveview_peak_function_t) g_value_get_pointer(value);
ptr = g_value_get_pointer(value);
waveview->peak_function = POSIX_FUNC_PTR_CAST(waveview_peak_function_t, ptr);
redraw = TRUE;
break;
case PROP_GAIN_FUNCTION:
waveview->gain_curve_function = (waveview_gain_curve_function_t) g_value_get_pointer(value);
ptr = g_value_get_pointer(value);
waveview->gain_curve_function = POSIX_FUNC_PTR_CAST(waveview_gain_curve_function_t, ptr);
redraw = TRUE;
break;
@ -946,19 +957,19 @@ gnome_canvas_waveview_get_property (
break;
case PROP_LENGTH_FUNCTION:
g_value_set_pointer(value, (void*) waveview->length_function);
g_value_set_pointer(value, POSIX_FUNC_PTR_CAST(void*, waveview->length_function));
break;
case PROP_SOURCEFILE_LENGTH_FUNCTION:
g_value_set_pointer(value, (void*) waveview->sourcefile_length_function);
g_value_set_pointer(value, POSIX_FUNC_PTR_CAST(void*, waveview->sourcefile_length_function));
break;
case PROP_PEAK_FUNCTION:
g_value_set_pointer(value, (void*) waveview->peak_function);
g_value_set_pointer(value, POSIX_FUNC_PTR_CAST(void*, waveview->peak_function));
break;
case PROP_GAIN_FUNCTION:
g_value_set_pointer(value, (void*) waveview->gain_curve_function);
g_value_set_pointer(value, POSIX_FUNC_PTR_CAST(void*, waveview->gain_curve_function));
break;
case PROP_GAIN_SRC: