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authormarha <marha@users.sourceforge.net>2013-03-18 16:34:52 +0100
committermarha <marha@users.sourceforge.net>2013-03-18 16:34:52 +0100
commit1923199a967ec1add54ad8c0e5d48ee320efdb9f (patch)
treeb8c3af0c9f15576a65d85bb80f94546d7c0d0542 /libX11/include/X11
parentb5acb643ab1a86b31409900a7c03281fcc48c8e3 (diff)
parent9c17f511266fff48a936633de280f271f0ce0c11 (diff)
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Merge remote-tracking branch 'origin/released'
* origin/released: libX11 mesa git update 18 Mar 2013 fontconfig libX11 mesa pixman xserver xkeyboard-config git update 11 Mar 2013
Diffstat (limited to 'libX11/include/X11')
-rw-r--r--libX11/include/X11/Xlibint.h19
1 files changed, 17 insertions, 2 deletions
diff --git a/libX11/include/X11/Xlibint.h b/libX11/include/X11/Xlibint.h
index e1a7b33d3..f71692c5d 100644
--- a/libX11/include/X11/Xlibint.h
+++ b/libX11/include/X11/Xlibint.h
@@ -489,6 +489,14 @@ extern void *_XGetRequest(Display *dpy, CARD8 type, size_t len);
req = (xReq *) _XGetRequest(dpy, X_/**/name, SIZEOF(xReq))
#endif
+/*
+ * MakeBigReq sets the CARD16 "req->length" to 0 and inserts a new CARD32
+ * length, after req->length, before the data in the request. The new length
+ * includes the "n" extra 32-bit words.
+ *
+ * Do not use MakeBigReq if there is no data already in the request.
+ * req->length must already be >= 2.
+ */
#ifdef LONG64
#define MakeBigReq(req,n) \
{ \
@@ -496,7 +504,7 @@ extern void *_XGetRequest(Display *dpy, CARD8 type, size_t len);
CARD32 _BRlen = req->length - 1; \
req->length = 0; \
_BRdat = ((CARD32 *)req)[_BRlen]; \
- memmove(((char *)req) + 8, ((char *)req) + 4, _BRlen << 2); \
+ memmove(((char *)req) + 8, ((char *)req) + 4, (_BRlen - 1) << 2); \
((CARD32 *)req)[1] = _BRlen + n + 2; \
Data32(dpy, &_BRdat, 4); \
}
@@ -507,12 +515,19 @@ extern void *_XGetRequest(Display *dpy, CARD8 type, size_t len);
CARD32 _BRlen = req->length - 1; \
req->length = 0; \
_BRdat = ((CARD32 *)req)[_BRlen]; \
- memmove(((char *)req) + 8, ((char *)req) + 4, _BRlen << 2); \
+ memmove(((char *)req) + 8, ((char *)req) + 4, (_BRlen - 1) << 2); \
((CARD32 *)req)[1] = _BRlen + n + 2; \
Data32(dpy, &_BRdat, 4); \
}
#endif
+/*
+ * SetReqLen increases the count of 32-bit words in the request by "n",
+ * or by "badlen" if "n" is too large.
+ *
+ * Do not use SetReqLen if "req" does not already have data after the
+ * xReq header. req->length must already be >= 2.
+ */
#ifndef __clang_analyzer__
#define SetReqLen(req,n,badlen) \
if ((req->length + n) > (unsigned)65535) { \