replace ssize_t with gint64 (#4153)

Julianiolo · jcupitt · commit d26ab56f25f8 · 2024-10-02T16:44:37.000+01:00
(cherry picked from commit 2e6e470)
diff --git a/ChangeLog b/ChangeLog
@@ -8,6 +8,7 @@
 - disable GLib cast checks and asserts for plain builds [kleisauke]
 - fix jpeg in tiff for high Q [nahilsobh]
 - threadset: fix a race condition during thread exit [kleisauke]
+- fix compatibility with MSVC [Julianiolo]
 
 11/8/24 8.15.3
 
diff --git a/libvips/iofuncs/generate.c b/libvips/iofuncs/generate.c
@@ -638,7 +638,7 @@ write_vips(VipsRegion *region, VipsRect *area, void *a)
 		// write() uses int not size_t on windows, so we need to chunk
 		// ... max 1gb, why not
 		int chunk_size = VIPS_MIN(1024 * 1024 * 1024, count);
-		ssize_t nwritten = write(region->im->fd, buf, chunk_size);
+		gint64 nwritten = write(region->im->fd, buf, chunk_size);
 
 		/* n == 0 isn't strictly an error, but we treat it as
 		 * one to make sure we don't get stuck in this loop.
diff --git a/libvips/iofuncs/util.c b/libvips/iofuncs/util.c
@@ -541,7 +541,7 @@ vips__write(int fd, const void *buf, size_t count)
 		// write() uses int not size_t on windows, so we need to chunk
 		// ... max 1gb, why not
 		int chunk_size = VIPS_MIN(1024 * 1024 * 1024, count);
-		ssize_t nwritten = write(fd, buf, chunk_size);
+		gint64 nwritten = write(fd, buf, chunk_size);
 
 		/* n == 0 isn't strictly an error, but we treat it as
 		 * one to make sure we don't get stuck in this loop.
