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-rw-r--r--lib/libc/stdio/ftell.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/libc/stdio/ftell.c b/lib/libc/stdio/ftell.c
new file mode 100644
index 00000000..c28fe143
--- /dev/null
+++ b/lib/libc/stdio/ftell.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <limits.h>
+#include <errno.h>
+
+long ftell(FILE *stream)
+{
+ off_t pos;
+
+ if ((pos = ftello(stream)) > LONG_MAX) {
+ errno = EOVERFLOW;
+ return -1;
+ }
+
+ return pos;
+}