Tutorial part 5: warnings¶
So far we’ve only emitted errors, but other kinds of diagnostic are possible, such as warnings.
We can select different kinds of diagnostic via diagnostic_level
when calling diagnostic_begin()
:
On compiling and running the program, we should get output similar to:
test-warning.c:17:11: warning: this is a warning
17 | #include <foo.h>
| ^~~~~
Various severities are possible, see diagnostic_level
for more
information.
In the next section of the tutorial we’ll look at adding fix-it hints to diagnostics.