`ctf` plugin: Use is_log_level_set to infer ctf_event_class log_level validity
Seen on clang-3.9, 4.0 and clang-1001.0.46.4.
Comparison of constant -1 with expression of type 'enum *****'
is always false [-Wtautological-constant-out-of-range-compare]
Note that the enum underlying type is implementation defined and left to
the choice of the compiler by the standard [1] (6.7.2.2 4). Most
compiler default to unsigned int. The use of -1 is not a problem per see
since wrap around of unsigned int behaviour is not undefined. Using -1
is the equivalent of assigning UINT_MAX here. This warning was removed
for later clang for these specific cases since the effect of always
being false is erroneous.
Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Change-Id: I6ce97c2481f36573d1a221b59e2459f1fe35ded9
Reviewed-on: https://review.lttng.org/c/babeltrace/+/1761
CI-Build: Philippe Proulx <eeppeliteloop@gmail.com>
Tested-by: jenkins <jenkins@lttng.org>
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>
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