mercury/mutable_init_impure.exp at c8d82022248ce80eb029f06c8d793430eaacf460 - mercury - Steepath Git Private Instance

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Peter Wang c8d8202224 Allow mutable variables to be initialised by impure functions.

Branches: main, 11.07

Allow mutable variables to be initialised by impure functions.

Also fix bug #223.  Make thread.semaphore.init/1 and thread.mvar.init/1
impure, as they should be.  They were introduced to be used as mutable
initialisers, which led to the oversight of making them pure.

compiler/make_hlds_passes.m:
compiler/prog_mutable.m:
	Modify the generated mutable initialisation predicates such that the
	initial value may be the return value of a impure function call.

compiler/purity.m:
	Ignore warnings about unnecessary impure annotations on goals in
	generated mutable predicates.  These would now appear when
	a mutable is initialised by a call to a pure function, or
	by a constant.

doc/reference_manual.texi:
NEWS:
	Document the language change.

library/thread.mvar.m:
library/thread.semaphore.m:
	Make thread.semaphore.init/1 and thread.mvar.init/1 impure.

tests/hard_coded/Mmakefile:
tests/hard_coded/mutable_init_impure.exp:
tests/hard_coded/mutable_init_impure.m:
	Add test case.

2011-11-03 01:01:36 +00:00

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	`Testing...`
	`Success.`