LibC: Declare ssize_t in a platform-agnostic way

While the compiler provides __SIZE_TYPE__ for declaring size_t,
there's unfortunately no __SSIZE_TYPE__ for ssize_t.

However, we can trick the preprocessor into doing what we want anyway
by doing "#define unsigned signed" before using __SIZE_TYPE__ again.

2 files changed, 5 insertions, 3 deletions

diff --git a/Libraries/LibC/stddef.h b/Libraries/LibC/stddef.h
index 39d865895f..4af93185f5 100644
--- a/Libraries/LibC/stddef.h
+++ b/Libraries/LibC/stddef.h
@@ -40,4 +40,9 @@
 typedef __PTRDIFF_TYPE__ ptrdiff_t;
 typedef __SIZE_TYPE__ size_t;
 
+/* There is no __SSIZE_TYPE__ but we can trick the preprocessor into defining it for us anyway! */
+#define unsigned signed
+typedef __SIZE_TYPE__ ssize_t;
+#undef unsigned
+
 #endif
diff --git a/Libraries/LibC/sys/types.h b/Libraries/LibC/sys/types.h
index 030d36ba28..0e8bfbcf33 100644
--- a/Libraries/LibC/sys/types.h
+++ b/Libraries/LibC/sys/types.h
@@ -45,9 +45,6 @@ typedef int __pid_t;
 
 typedef int id_t;
 
-typedef int __ssize_t;
-#define ssize_t __ssize_t
-
 typedef __WINT_TYPE__ wint_t;
 
 typedef uint32_t ino_t;