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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0005538||OCaml||OCaml general||public||2012-03-14 02:24||2012-03-27 17:11|
|Priority||normal||Severity||feature||Reproducibility||have not tried|
|Target Version||Fixed in Version||4.00.0+dev|
|Summary||0005538: combining -i and -annot|
|Description||Currently ocamlc -i disables any output to files.|
It would be nice that combining -i and -annot would still generate the .annot file,
so that one get all the typing information without actually compiling.
|Tags||No tags attached.|
|I have a related request: I recently noticed that `ocamlc -i foo.ml` working fine does not actually provide any assurance that the code compile fines, because some static checking is performed after type-checking (in my case a "this kind of expression is not allowed in a let rec..."). So to be sure that I get all statically-detected errors, I have to use `ocamlc -c foo.ml` which is less informative. It would be nice if `ocamlc -i -c foo.ml` gave me the best of both worlds, while it currently ignores the `-c` part.|
|In addition to performing type-checking, "-i" also prints the inferred interface. Maybe we should introduce a new "type-check only" flag, which does the full type-checking (and produce .annot files if requested), without printing the interface.|
Several OCaml developers are discussing this PR right now, and we're not sure what usage scenario you have in mind. Why is it that you can't use "ocamlc -c -annot" ?
I just stumbled on it when trying to look both at the interface generated for a unit and its annotations.
This was for debugging purposes, but this could happen in a developing tool too.
I'm not 100% sure what is the right behavior.
Note that -annot is not linked to compilation: it may output some information even if type checking fails.
I believe the expected behavior is rather clear: don't ignore any explicitly passed flag, even in presence of -i.
- if -annot is passed, produce -annot files before printing the interface
- if -c is passed, then compile (and report related errors) after printing the interface
If there was an additional typecheck-only flag as suggested by Alain, it would be implied by -i and -annot, but would not imply interface printing -- a reasonable rationale for this is that interface printing can be slow.
I am not questioning the expected behavior: I'm questioning the need for yet another flag or combination of flags, given that "ocamlc -i" followed by "ocamlc -c -dannot" does the job in this case.
In the past, -i was a modifier on -c and would not prevent generation of compiled files, and some users made a reasonable point that -i should print the inferred interface *and do nothing else*. Could we just stick with this behavior?
I have looked into the code and noticed that "ocamlopt" does allow -i and -annot together.
Moreover, "ocamlc -i" also fails to check for warnings-as-errors and to remove preprocessed temporary files.
I have brought ocamlc in line with ocamlopt on all these points.
Until the next release, you can work around this issue by using "ocamlopt -i -annot".
Fixed in 4.00 (commit 12284) and trunk (commit 12285).
|2012-03-14 02:24||garrigue||New Issue|
|2012-03-14 06:27||gasche||Note Added: 0007062|
|2012-03-14 08:47||frisch||Note Added: 0007064|
|2012-03-26 15:09||xleroy||Note Added: 0007165|
|2012-03-26 15:09||xleroy||Status||new => feedback|
|2012-03-27 05:03||garrigue||Note Added: 0007178|
|2012-03-27 05:03||garrigue||Status||feedback => new|
|2012-03-27 10:45||gasche||Note Added: 0007190|
|2012-03-27 10:52||xleroy||Note Added: 0007192|
|2012-03-27 10:52||xleroy||Status||new => resolved|
|2012-03-27 10:52||xleroy||Resolution||open => suspended|
|2012-03-27 17:11||doligez||Note Added: 0007200|
|2012-03-27 17:11||doligez||Status||resolved => closed|
|2012-03-27 17:11||doligez||Resolution||suspended => fixed|
|2012-03-27 17:11||doligez||Fixed in Version||=> 4.00.0+dev|
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