refactor(printf): use output function wrapping struct

1 files changed, 8 insertions, 2 deletions

diff --git a/printf.c b/printf.c
index 0b94d4a..342d91c 100644
--- a/printf.c
+++ b/printf.c
@@ -105,7 +105,10 @@ static inline void _out_char(char character, char* buffer, size_t idx, size_t ma
 static inline void _out_fct(char character, char* buffer, size_t idx, size_t maxlen)

 {

   (void)idx; (void)maxlen;

-  ((void (*)(char character))buffer)(character);  // buffer is the output fct pointer

+  typedef struct tag_out_fct_wrap_type {

+    void (*fct)(char character);

+  } out_fct_wrap_type;

+  ((out_fct_wrap_type*)buffer)->fct(character);  // buffer is the output fct pointer

 }

 

 

@@ -692,7 +695,10 @@ int oprintf(void (*out)(char character), const char* format, ...)
 {

   va_list va;

   va_start(va, format);

-  const int ret = _vsnprintf(_out_fct, (char*)out, (size_t)-1, format, va);

+  const struct tag_out_fct_wrap {

+    void (*fct)(char character);

+  } out_fct_wrap = { out };

+  const int ret = _vsnprintf(_out_fct, (char*)&out_fct_wrap, (size_t)-1, format, va);

   va_end(va);

   return ret;

 }