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glib-init: Add more static assertions about gsize

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Helps: https://gitlab.gnome.org/GNOME/glib/-/issues/1484
Signed-off-by: Simon McVittie <smcv@collabora.com>
This commit is contained in:
Simon McVittie 2022-10-21 14:36:54 +01:00
parent de2602736d
commit 43d8545045
1 changed files with 6 additions and 0 deletions
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6
glib/glib-init.c
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@ -116,10 +116,16 @@ G_STATIC_ASSERT (sizeof (size_t) == GLIB_SIZEOF_SIZE_T);
G_STATIC_ASSERT (sizeof (size_t) == GLIB_SIZEOF_SSIZE_T);
G_STATIC_ASSERT (sizeof (gsize) == GLIB_SIZEOF_SSIZE_T);
G_STATIC_ASSERT (sizeof (gsize) == sizeof (size_t));
G_STATIC_ASSERT (G_MAXSIZE == SIZE_MAX);
/* Again this is size_t not ssize_t, because ssize_t is POSIX, not C99 */
G_STATIC_ASSERT (sizeof (gssize) == sizeof (size_t));
G_STATIC_ASSERT (G_ALIGNOF (gsize) == G_ALIGNOF (size_t));
G_STATIC_ASSERT (G_ALIGNOF (gssize) == G_ALIGNOF (size_t));
/* We assume that GSIZE_TO_POINTER is reversible by GPOINTER_TO_SIZE
* without losing information.
* However, we do not assume that GPOINTER_TO_SIZE can store an arbitrary
* pointer in a gsize (known to be false on CHERI). */
G_STATIC_ASSERT (sizeof (size_t) <= sizeof (void *));
/* goffset is always 64-bit, even if off_t is only 32-bit
* (compiling without large-file-support on 32-bit) */