Add comments explaining changes to upstream source files.

[wasi-libc.git] / libc-top-half / musl / src / stdio / printf.c

diff --git a/libc-top-half/musl/src/stdio/printf.c b/libc-top-half/musl/src/stdio/printf.c
index ca469d9575e291cc81a040fd219bb2c01dd187f2..7020fc48484ebfba30c53857a619926a735fa402 100644 (file)
--- a/libc-top-half/musl/src/stdio/printf.c
+++ b/libc-top-half/musl/src/stdio/printf.c
@@ -10,7 +10,7 @@ int printf(const char *restrict fmt, ...)
        va_end(ap);
        return ret;
 }
-#ifdef __wasilibc_unmodified_upstream
+#ifdef __wasilibc_unmodified_upstream // Changes to optimize printf/scanf when long double isn't needed
 #else
 weak_alias(printf, iprintf);
 weak_alias(printf, printf_no_Lf);