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-rw-r--r--lib/utils/printf.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/utils/printf.c b/lib/utils/printf.c
index 34bf3eb0fc..51dc0a86e0 100644
--- a/lib/utils/printf.c
+++ b/lib/utils/printf.c
@@ -102,6 +102,12 @@ STATIC void strn_print_strn(void *data, const char *str, size_t len) {
strn_print_env->remain -= len;
}
+#ifdef __GNUC__
+// uClibc requires this alias to be defined, or there may be link errors
+// when linkings against it statically.
+int __GI_vsnprintf(char *str, size_t size, const char *fmt, va_list ap) __attribute__((weak, alias ("vsnprintf")));
+#endif
+
int vsnprintf(char *str, size_t size, const char *fmt, va_list ap) {
strn_print_env_t strn_print_env = {str, size};
mp_print_t print = {&strn_print_env, strn_print_strn};