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-rw-r--r--kern/printf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kern/printf.h b/kern/printf.h
index c5effe5..2268111 100644
--- a/kern/printf.h
+++ b/kern/printf.h
@@ -40,6 +40,7 @@ extern void printnum (unsigned long u, int base,
vm_offset_t putc_arg);
extern int sprintf (char *buf, const char *fmt, ...);
+extern int vsnprintf (char *buf, int size, const char *fmt, va_list args);
extern int printf (const char *fmt, ...);