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4e3af446ef
compiler/error_util.m:
Some of the messages we print if --verbose-errors are enabled just explain
what an always-printed error message means. If a compiler invocation
reports several instances of an error, the explanation is useful
only the first time. This diff provides a mechanism for printing
such verbose messages only once per invocation of write_error_specs.
compiler/*.m:
Specify verbose_once for verbose error message components which are
(a) not specific to the specific instance of the error they are generated
for, and (b) whose usefulness/size ratio is not high enough. Part (b)
means that it is ok to repeatedly print a single-line reminder,
but not a 20-line missive that reads like an extract from the
reference manual.
In one case, make an error message clearer.
tests/invalid/*.err_exp:
tests/warnings/*.exp:
Expect the new, slimmed-down output.
22 lines
1.4 KiB
Plaintext
22 lines
1.4 KiB
Plaintext
multisoln_func.m:020: Error: invalid determinism for `f'(in) = out:
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multisoln_func.m:020: the primary mode of a function cannot be `cc_multi'.
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multisoln_func.m:020: In Mercury, a function is supposed to be a true
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multisoln_func.m:020: mathematical function of its arguments; that is, the
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multisoln_func.m:020: value of the function's result should be determined
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multisoln_func.m:020: only by the values of its arguments. (Allowing
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multisoln_func.m:020: functions to have more than one result for the same
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multisoln_func.m:020: arguments would break referential transparency.) Most
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multisoln_func.m:020: likely, this procedure should be a predicate, not a
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multisoln_func.m:020: function.
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multisoln_func.m:026: Error: invalid determinism for `test' = out:
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multisoln_func.m:026: the primary mode of a function cannot be `cc_multi'.
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multisoln_func.m:033: Error: invalid determinism for `test2' = out:
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multisoln_func.m:033: the primary mode of a function cannot be `multi'.
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multisoln_func.m:033: Inferred :- func test2 = int.
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multisoln_func.m:037: Error: invalid determinism for `test3'(in) = out:
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multisoln_func.m:037: the primary mode of a function cannot be `nondet'.
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multisoln_func.m:037: Inferred :- func test3(int) = int.
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multisoln_func.m:041: Error: invalid determinism for `test3b'(in) = out:
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multisoln_func.m:041: the primary mode of a function cannot be `cc_nondet'.
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multisoln_func.m:041: Inferred :- func test3b(int) = int.
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