From 7b0a3afdf90e85cabe3e39f49a5c2aa22e3e3e8d Mon Sep 17 00:00:00 2001 From: Grissiom Date: Mon, 23 Sep 2013 11:27:48 +0800 Subject: kservice: export vsnprintf as rt_vsnprintf vsnprintf is a common string function that could be used in many places. Using both vsnprintf in libc and vsnprintf in the RTT could make a bigger image. Moreover, if newlib is not enabled when compiling with GCC, referencing vsnprintf will lead to link error: .../arm-none-eabi/lib/armv7-ar/thumb/softfp/libc.a(lib_a-sbrkr.o): In function `_sbrk_r': sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk' collect2: error: ld returned 1 exit status Using rt_vsnprintf could avoid such problem. --- include/rtthread.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/rtthread.h b/include/rtthread.h index 28c0192291..b68a301a5c 100644 --- a/include/rtthread.h +++ b/include/rtthread.h @@ -469,6 +469,7 @@ int rt_system_module_init(void); void rt_kprintf(const char *fmt, ...); #endif rt_int32_t rt_vsprintf(char *dest, const char *format, va_list arg_ptr); +rt_int32_t rt_vsnprintf(char *buf, rt_size_t size, const char *fmt, va_list args); rt_int32_t rt_sprintf(char *buf ,const char *format, ...); rt_int32_t rt_snprintf(char *buf, rt_size_t size, const char *format, ...); -- cgit v1.3.1