1 files changed, 4 insertions, 0 deletions
diff --git a/src/shared/mem.h b/src/shared/mem.h
index 8c83f2f..aac87f5 100644
--- a/src/shared/mem.h
+++ b/src/shared/mem.h
@@ -1,4 +1,5 @@
 #pragma once
+#include <stdarg.h>
 #include <stddef.h>
 
 /* note: (partially) tested in the userland tests */
@@ -11,3 +12,6 @@ void *memset(void *s, int c, size_t n);
 
 int strcmp(const char *s1, const char *s2);
 size_t strlen(const char *s);
+
+int snprintf(char *restrict str, size_t len, const char *restrict fmt, ...);
+int vsnprintf(char *restrict str, size_t len, const char *restrict fmt, va_list ap);