Mesa (master): mesa: throw error if bufSize negative in GetSynciv on OpenGL ES

[Tapani Pälli]

Module: Mesa
Branch: master
Commit: 2d7e0f35c54f49c3280eea308a652253cb3bde46
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2d7e0f35c54f49c3280eea308a652253cb3bde46

Author: Tapani Pälli <tapani.palli at intel.com>
Date:   Fri Oct  7 08:41:15 2016 +0300

mesa: throw error if bufSize negative in GetSynciv on OpenGL ES

Fixes following dEQP tests:

   dEQP-GLES31.functional.debug.negative_coverage.callbacks.state.get_synciv
   dEQP-GLES31.functional.debug.negative_coverage.get_error.state.get_synciv
   dEQP-GLES31.functional.debug.negative_coverage.log.state.get_synciv

v2: drop _mesa_is_gles check (Kenneth)

Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98133
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/mesa/main/syncobj.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/mesa/main/syncobj.c b/src/mesa/main/syncobj.c
index be758dd..a3124e4 100644
--- a/src/mesa/main/syncobj.c
+++ b/src/mesa/main/syncobj.c
@@ -425,6 +425,14 @@ _mesa_GetSynciv(GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length,
       return;
    }
 
+   /* Section 4.1.3 (Sync Object Queries) of the OpenGL ES 3.10 spec says:
+    *
+    *    "An INVALID_VALUE error is generated if bufSize is negative."
+    */
+   if (bufSize < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGetSynciv(pname=0x%x)\n", pname);
+   }
+
    if (size > 0 && bufSize > 0) {
       const GLsizei copy_count = MIN2(size, bufSize);