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-rw-r--r--src/stdio/putchar_unlocked.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/stdio/putchar_unlocked.c b/src/stdio/putchar_unlocked.c
new file mode 100644
index 00000000..72d47d15
--- /dev/null
+++ b/src/stdio/putchar_unlocked.c
@@ -0,0 +1,7 @@
+#include "stdio_impl.h"
+
+int putchar_unlocked(int c)
+{
+ return stdout->wpos < stdout->wstop ?
+ (*stdout->wpos++ = c) : __overflow(stdout, c);
+}