sna: Rename the attribute macro __packed__ to avoid clang barfing

Using __packed__ as shorthand for ___attribute__(__packed__) confuses
clang as. (I guess to it expands (__packed__) which gcc skips.) As
clang also uses packed in its builtins, we have to find a compromise,
and so tightly_packed wins for being a more verbose description without
the dangerous leading underscores.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

2 files changed, 3 insertions, 3 deletions

diff --git a/src/sna/compiler.h b/src/sna/compiler.h
index 28d33511..ff412179 100644
--- a/src/sna/compiler.h
+++ b/src/sna/compiler.h
@@ -37,7 +37,7 @@
 #define must_check __attribute__((warn_unused_result))
 #define constant __attribute__((const))
 #define pure __attribute__((pure))
-#define __packed__ __attribute__((__packed__))
+#define tightly_packed __attribute__((__packed__))
 #define flatten __attribute__((flatten))
 #define page_aligned __attribute__((aligned(4096)))
 #else
@@ -49,7 +49,7 @@
 #define must_check
 #define constant
 #define pure
-#define __packed__
+#define tighly_packed
 #define flatten
 #define page_aligned
 #endif
diff --git a/src/sna/sna_render.h b/src/sna/sna_render.h
index 86df2d02..ad8121e0 100644
--- a/src/sna/sna_render.h
+++ b/src/sna/sna_render.h
@@ -151,7 +151,7 @@ struct sna_composite_op {
 struct sna_opacity_box {
 	BoxRec box;
 	float alpha;
-} __packed__;
+} tightly_packed;
 
 struct sna_composite_spans_op {
 	struct sna_composite_op base;