clean up stdio_impl.h

this header evolved to facilitate the extremely lazy practice of
omitting explicit includes of the necessary headers in individual
stdio source files; not only was this sloppy, but it also increased
build time.

now, stdio_impl.h is only including the headers it needs for its own
use; any further headers needed by source files are included directly
where needed.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/stdlib/wcstol.c b/src/stdlib/wcstol.c
index 3d7c97da..4443f577 100644
--- a/src/stdlib/wcstol.c
+++ b/src/stdlib/wcstol.c
@@ -1,6 +1,10 @@
 #include "stdio_impl.h"
 #include "intscan.h"
 #include "shgetc.h"
+#include <inttypes.h>
+#include <limits.h>
+#include <wctype.h>
+#include <wchar.h>
 
 /* This read function heavily cheats. It knows:
  *  (1) len will always be 1