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libc: core: add return-value to printf output callbacks

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max 🍓
2026-04-19 20:51:23 +01:00
parent 0e3f010713
commit b07acb3cdf
1 changed files with 9 additions and 4 deletions
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lib/libc/core/stdio/printf.c
+9 -4
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@@ -118,7 +118,7 @@
#endif #endif
// output function type // output function type
typedef void ( typedef int (
*out_fct_type)(char character, void *buffer, size_t idx, size_t maxlen); *out_fct_type)(char character, void *buffer, size_t idx, size_t maxlen);
// wrapper (used as buffer) for output function type // wrapper (used as buffer) for output function type
@@ -128,7 +128,7 @@ typedef struct {
} out_fct_wrap_type; } out_fct_wrap_type;
// internal buffer output // internal buffer output
static inline void _out_buffer( static inline int _out_buffer(
char character, char character,
void *buffer, void *buffer,
size_t idx, size_t idx,
@@ -137,10 +137,12 @@ static inline void _out_buffer(
if (idx < maxlen) { if (idx < maxlen) {
((char *)buffer)[idx] = character; ((char *)buffer)[idx] = character;
} }
return 0;
} }
// internal null output // internal null output
static inline void _out_null( static inline int _out_null(
char character, char character,
void *buffer, void *buffer,
size_t idx, size_t idx,
@@ -150,10 +152,11 @@ static inline void _out_null(
(void)buffer; (void)buffer;
(void)idx; (void)idx;
(void)maxlen; (void)maxlen;
return 0;
} }
// internal output function wrapper // internal output function wrapper
static inline void _out_fct( static inline int _out_fct(
char character, char character,
void *buffer, void *buffer,
size_t idx, size_t idx,
@@ -166,6 +169,8 @@ static inline void _out_fct(
((out_fct_wrap_type *)buffer) ((out_fct_wrap_type *)buffer)
->fct(character, ((out_fct_wrap_type *)buffer)->arg); ->fct(character, ((out_fct_wrap_type *)buffer)->arg);
} }
return 0;
} }
// internal secure strlen // internal secure strlen