Add SDL_asprintf and SDL_vasprintf

src/dynapi/SDL_dynapi.c

@@ -89,6 +89,12 @@ static void SDL_InitDynamicAPI(void);
         va_end(ap); \
         return retval; \
     } \
+    _static int SDLCALL SDL_asprintf##name(char **strp, SDL_PRINTF_FORMAT_STRING const char *fmt, ...) { \
+        int retval; va_list ap; initcall; va_start(ap, fmt); \
+        retval = jump_table.SDL_vasprintf(strp, fmt, ap); \
+        va_end(ap); \
+        return retval; \
+    } \
     _static void SDLCALL SDL_Log##name(SDL_PRINTF_FORMAT_STRING const char *fmt, ...) { \
         va_list ap; initcall; va_start(ap, fmt); \
         jump_table.SDL_LogMessageV(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, fmt, ap); \

src/dynapi/SDL_dynapi_overrides.h

@@ -820,3 +820,5 @@
 #define SDL_RenderGeometry SDL_RenderGeometry_REAL
 #define SDL_RenderGeometryRaw SDL_RenderGeometryRaw_REAL
 #define SDL_RenderSetVSync SDL_RenderSetVSync_REAL
+#define SDL_asprintf SDL_asprintf_REAL
+#define SDL_vasprintf SDL_vasprintf_REAL

src/dynapi/SDL_dynapi_procs.h

@@ -885,3 +885,7 @@ SDL_DYNAPI_PROC(void*,SDL_GetTextureUserData,(SDL_Texture *a),(a),return)
 SDL_DYNAPI_PROC(int,SDL_RenderGeometry,(SDL_Renderer *a, SDL_Texture *b, const SDL_Vertex *c, int d, const int *e, int f),(a,b,c,d,e,f),return)
 SDL_DYNAPI_PROC(int,SDL_RenderGeometryRaw,(SDL_Renderer *a, SDL_Texture *b, const float *c, int d, const int *e, int f, const float *g, int h, int i, const void *j, int k, int l),(a,b,c,d,e,f,g,h,i,j,k,l),return)
 SDL_DYNAPI_PROC(int,SDL_RenderSetVSync,(SDL_Renderer *a, int b),(a,b),return)
+#if !SDL_DYNAPI_PROC_NO_VARARGS
+SDL_DYNAPI_PROC(int,SDL_asprintf,(char **a, SDL_PRINTF_FORMAT_STRING const char *b, ...),(a,b),return)
+#endif
+SDL_DYNAPI_PROC(int,SDL_vasprintf,(char **a, const char *b, va_list c),(a,b,c),return)