Fix some constants and allow fprintf to work for stdout/stderr.

include/bits/alltypes.h

@@ -11,7 +11,7 @@
 #endif
 
 
-typedef size_t ssize_t;
+typedef ptrdiff_t ssize_t;
 
 typedef __builtin_va_list va_list;
 typedef __builtin_va_list __isoc_va_list;

include/bits/limits.h

@@ -1,7 +1,7 @@
 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #define PAGE_SIZE 4096
-#define LONG_BIT 64
+#define LONG_BIT 32
 #endif
 
 #define LONG_MAX  0x7fffffffL

include/float.h

@@ -5,8 +5,8 @@
 extern "C" {
 #endif
 
-int __flt_rounds(void);
-#define FLT_ROUNDS (__flt_rounds())
+/* WASM doesn't support changing the rounding mode dynamically */
+#define FLT_ROUNDS 1
 
 #define FLT_RADIX 2
 

src/stdio/printf.c

@@ -740,3 +740,10 @@ int fctprintf(void (*out)(char character, void* arg), void* arg, const char* for
   va_end(va);
   return ret;
 }
+
+
+int vfprintf(FILE *restrict f, const char *restrict fmt, va_list ap)
+{
+  char buffer[1];
+  return _vsnprintf(_out_char, buffer, (size_t)-1, fmt, ap);
+}

src/stdio/vfprintf.c

@@ -12,6 +12,8 @@
 
 /* Some useful macros */
 
+#if 0
+
 #define MAX(a,b) ((a)>(b) ? (a) : (b))
 #define MIN(a,b) ((a)<(b) ? (a) : (b))
 
@@ -691,3 +693,5 @@ int vfprintf(FILE *restrict f, const char *restrict fmt, va_list ap)
 	va_end(ap2);
 	return ret;
 }
+
+#endif