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-rw-r--r--libc/stdio/stdio_ext.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/libc/stdio/stdio_ext.cpp b/libc/stdio/stdio_ext.cpp
index fea44f68b..310076a3a 100644
--- a/libc/stdio/stdio_ext.cpp
+++ b/libc/stdio/stdio_ext.cpp
@@ -99,3 +99,7 @@ int feof_unlocked(FILE* fp) {
int ferror_unlocked(FILE* fp) {
return __sferror(fp);
}
+
+int fileno_unlocked(FILE* fp) {
+ return __sfileno(fp);
+}