[ragel-users] Wrong #line directive emitted when including files

[Diego E. “Flameeyes” Pettenò]

I've been spending half an hour to find a build error in my code because
of this bug so here comes an useful testcase ;)

When including statemachines from multiple files, the #line directive
emitted in the .c file, which is used to report errors by gcc, is
_always_ referencing the converted .rl file. In the case of the testcase
I'm attaching (which is a reduced version of what I hit), gcc is going
to report an error in a line that is a comment:

flame at yamato testcase-bug-ragel % ragel test.rl
flame at yamato testcase-bug-ragel % gcc test.c -c
test.rl: In function ‘test’:
test.rl:9: error: ‘line’ undeclared (first use in this function)
test.rl:9: error: (Each undeclared identifier is reported only once
test.rl:9: error: for each function it appears in.)
flame at yamato testcase-bug-ragel % sed -n -e 9p test.rl 
 *


-- 
Diego Elio Pettenò — “Flameeyes”
http://blog.flameeyes.eu/

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