[glib/wip/smcv/assert-standard-types: 2/2] glib-unix: Assert that our portable types correspond to ssize_t and pid_t

[Simon McVittie <smcv src gnome org>]

commit 8c0a96fa12490943891d9d8f8109e1bce1a7191a
Author: Simon McVittie <smcv collabora com>
Date:   Fri Oct 2 15:07:32 2020 +0100

    glib-unix: Assert that our portable types correspond to ssize_t and pid_t
    
    If this fails to compile on some particularly bizarre Unix platform,
    we can relax these assertions; but our expectation is that gssize is
    POSIX ssize_t, and that on Unix, GPid is POSIX pid_t.
    
    Signed-off-by: Simon McVittie <smcv collabora com>

 glib/glib-unix.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/glib/glib-unix.c b/glib/glib-unix.c
index 608fbd6e6..9d2877c66 100644
--- a/glib/glib-unix.c
+++ b/glib/glib-unix.c
@@ -33,6 +33,12 @@
 #include <sys/types.h>
 #include <pwd.h>
 
+G_STATIC_ASSERT (sizeof (ssize_t) == GLIB_SIZEOF_SSIZE_T);
+G_STATIC_ASSERT (G_ALIGNOF (gssize) == G_ALIGNOF (ssize_t));
+
+G_STATIC_ASSERT (sizeof (GPid) == sizeof (pid_t));
+G_STATIC_ASSERT (G_ALIGNOF (GPid) == G_ALIGNOF (pid_t));
+
 /**
  * SECTION:gunix
  * @title: UNIX-specific utilities and integration