[Qemu-devel] [Tracing] Compilation failure

[Prerna Saxena]

Hi Stefan,
I think this needs to be resolved.

  CC    trace.o
  CC    simpletrace.o
cc1: warnings being treated as errors
/home/prerna/qemu-testing/git/qemu/simpletrace.c: In function 
‘write_header’:
/home/prerna/qemu-testing/git/qemu/simpletrace.c:46: error: integer 
constant is too large for ‘long’ type
/home/prerna/qemu-testing/git/qemu/simpletrace.c:46: error: large 
integer implicitly truncated to unsigned type
make: *** [simpletrace.o] Error 1

The error arises due to :
TraceRecord header = {
        .event = -1UL, /* max avoids conflicting with TraceEventIDs */
        .timestamp_ns = 0xf2b177cb0aa429b4, /* magic number */
                        ^^^^^^^^ error.

Also, it would be better to #define the magic number to some macro, and 
use that instead of using the constant directly.

Regards,
--
Prerna Saxena

Linux Technology Centre,
IBM Systems and Technology Lab,
Bangalore, India