radv: print a warning when RADV_TRAP_HANDLER is used

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6468>
diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index 5139cf6..31f486d 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -2821,6 +2821,10 @@
 		/* TODO: Add support for more hardware. */
 		assert(device->physical_device->rad_info.chip_class == GFX8);
 
+		fprintf(stderr, "**********************************************************************\n");
+		fprintf(stderr, "* WARNING: RADV_TRAP_HANDLER is experimental and only for debugging! *\n");
+		fprintf(stderr, "**********************************************************************\n");
+
 		/* To get the disassembly of the faulty shaders, we have to
 		 * keep some shader info around.
 		 */