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046f2afecb
Estimated hours taken: 6 Fix a semantic hole. Previously, unique variables could be used as non-local variables inside a lambda goal and shared within that lambda. This fixes the problem by requiring that all non-local vars to a lambda must be ground-shared. compiler/modecheck_unify.m: Changes detailed above. compiler/mode_errors.m: Add a new kind of mode error, mode_error_non_local_lambda_var. One small change to find_important_errors/3 to ensure that this error will be reported if the lambda is an implicit call argument unification. compiler/inst_util.m: Export make_shared_inst_list/4 for use by modecheck_unify.m. compiler/instmap.m: New predicate: instmap__set_vars/4, which sets multiple vars in an instmap. tests/invalid/bind_var_errors.m: tests/invalid/bind_var_errors.err_exp: Regression test.
24 lines
1.6 KiB
Plaintext
24 lines
1.6 KiB
Plaintext
bind_var_errors.m:033: In clause for `bind_var_in_negation':
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bind_var_errors.m:033: scope error: attempt to bind a variable inside a negation.
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bind_var_errors.m:033: Variable `X' has instantiatedness `free',
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bind_var_errors.m:033: expected instantiatedness was `unique(42)'.
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bind_var_errors.m:039: In clause for `bind_var_in_ite_cond(in)':
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bind_var_errors.m:039: scope error: attempt to bind a non-local variable
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bind_var_errors.m:039: inside the condition of an if-then-else.
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bind_var_errors.m:039: Variable `Y' has instantiatedness `free',
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bind_var_errors.m:039: expected instantiatedness was `unique(42)'.
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bind_var_errors.m:048: In clause for `bind_var_in_lambda':
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bind_var_errors.m:048: in argument 1 of call to predicate `call/1':
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bind_var_errors.m:048: mode error: variable `Y' has instantiatedness `free',
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bind_var_errors.m:048: expected instantiatedness for non-local variables
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bind_var_errors.m:048: of lambda goals is `ground'.
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bind_var_errors.m:053: In clause for `share_var_in_lambda(di)':
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bind_var_errors.m:053: in argument 1 of call to predicate `bind_var_errors:destroy/1':
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bind_var_errors.m:053: mode error: variable `X' has instantiatedness `ground',
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bind_var_errors.m:053: expected instantiatedness was `unique'.
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bind_var_errors.m:060: In clause for `clobber_var_in_lambda(di)':
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bind_var_errors.m:060: in argument 1 of call to predicate `bind_var_errors:destroy/1':
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bind_var_errors.m:060: unique-mode error: the called procedure would clobber
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bind_var_errors.m:060: its argument, but variable `X' is still live.
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For more information, try recompiling with `-E'.
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