Add snprintf and remove our sprintf

app/libc/Makefile

@@ -22,7 +22,7 @@ endif
 #   makefile at its root level - these are then overridden
 #   for a subtree within the makefile rooted therein
 #
-#DEFINES +=
+DEFINES += -DHAVE_CONFIG_H 
 
 #############################################################
 # Recursion Magic - Don't touch this!!

app/libc/snp_config.h

@@ -0,0 +1,39 @@
+#ifndef SNP_CONFIG_H
+#define SNP_CONFIG_H
+
+#define TEST_SNPRINTF 0
+#define HAVE_SNPRINTF 0
+#define HAVE_VSNPRINTF 0
+#define HAVE_ASPRINTF 0
+#define HAVE_VASPRINTF 0
+
+#define HAVE_STDARG_H 1
+#define HAVE_STDLIB_H 1
+
+#define HAVE_VA_COPY 0
+#define HAVE___VA_COPY 0
+#define HAVE_FLOAT_H 1
+#define HAVE_INTTYPES_H 1
+#define HAVE_LOCALE_H 0
+#define HAVE_STDDEF_H 1
+#define HAVE_STDINT_H 1
+#define HAVE_UNSIGNED_LONG_LONG_INT 1
+#define HAVE_UINTMAX_T 1
+#define HAVE_LONG_DOUBLE 0
+#define HAVE_LONG_LONG_INT 1
+#define HAVE_INTMAX_T 1
+#define HAVE_UINTPTR_T 1
+#define HAVE_PTRDIFF_T 1
+
+#define HAVE_LOCALECONV 0 
+#define HAVE_LCONV_DECIMAL_POINT 0
+#define HAVE_LCONV_THOUSANDS_SEP 0
+#define LDOUBLE_MIN_10_EXP DBL_MIN_10_EXP
+#define LDOUBLE_MAX_10_EXP DBL_MAX_10_EXP
+
+#define rpl_snprintf snprintf
+#define rpl_vsnprintf vsnprintf
+#define rpl_vasprintf vasprintf
+#define rpl_asprintf asprintf
+
+#endif	/* SNP_CONFIG_H */

sdk-overrides/include/stdio.h

@@ -14,8 +14,9 @@ extern void output_redirect(const char *str, size_t l);
 
 #define printf(...) do { \
   char __printf_buf[BUFSIZ]; \
-  sprintf(__printf_buf, __VA_ARGS__); \
+  snprintf(__printf_buf, BUFSIZ, __VA_ARGS__); \
   puts(__printf_buf); \
 } while(0)
 
+
 #endif