[m-rev.] diff: fix error message problem reported by Ralph

[Zoltan Somogyi]

Fix a problem reported by Ralph.

compiler/det_analysis.m:
	Complain about bad determinisms for predicates with I/O states only if
	the predicate is declared with a bad determinism or doesn't have any
	declared determinism. Don't complain if the declared determinism is OK
	even if the inferred determinism isn't, since in that case the root of
	the problem lies elsewhere, and other error messages will point it out.

tests/invalid/magic_box.err_exp:
	Update the expected output of this test case.

Zoltan.

cvs diff: Diffing .
cvs diff: Diffing analysis
cvs diff: Diffing bindist
cvs diff: Diffing boehm_gc
cvs diff: Diffing boehm_gc/Mac_files
cvs diff: Diffing boehm_gc/cord
cvs diff: Diffing boehm_gc/cord/private
cvs diff: Diffing boehm_gc/doc
cvs diff: Diffing boehm_gc/include
cvs diff: Diffing boehm_gc/include/private
cvs diff: Diffing boehm_gc/tests
cvs diff: Diffing browser
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Index: compiler/det_analysis.m
===================================================================
RCS file: /home/mercury/mercury1/repository/mercury/compiler/det_analysis.m,v
retrieving revision 1.170
diff -u -b -r1.170 det_analysis.m
--- compiler/det_analysis.m	22 Jun 2004 08:54:48 -0000	1.170
+++ compiler/det_analysis.m	24 Jun 2004 05:40:01 -0000
@@ -250,9 +250,11 @@
 		% that says so.
 	det_get_soln_context(Detism0, OldInferredSolnContext),
 	proc_info_declared_determinism(Proc0, MaybeDeclaredDetism),
-	( MaybeDeclaredDetism = yes(DeclaredDetism) ->
+	(
+		MaybeDeclaredDetism = yes(DeclaredDetism),
 		det_get_soln_context(DeclaredDetism, DeclaredSolnContext)
 	;
+		MaybeDeclaredDetism = no,
 		DeclaredSolnContext = all_solns
 	),
 	(
@@ -294,8 +296,14 @@
 	(
 		proc_info_has_io_state_pair(!.ModuleInfo, Proc,
 			_InArgNum, _OutArgNum),
-		determinism_to_code_model(Detism, CodeModel),
-		CodeModel \= model_det
+		(
+			MaybeDeclaredDetism = yes(CheckDetism)
+		;
+			MaybeDeclaredDetism = no,
+			CheckDetism = Detism
+		),
+		determinism_to_code_model(CheckDetism, CheckCodeModel),
+		CheckCodeModel \= model_det
 	->
 		!:Msgs = [has_io_state_but_not_det(PredId, ProcId) | !.Msgs]
 	;
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Index: tests/invalid/magicbox.err_exp
===================================================================
RCS file: /home/mercury/mercury1/repository/tests/invalid/magicbox.err_exp,v
retrieving revision 1.2
diff -u -b -r1.2 magicbox.err_exp
--- tests/invalid/magicbox.err_exp	14 May 2004 08:40:31 -0000	1.2
+++ tests/invalid/magicbox.err_exp	24 Jun 2004 07:21:11 -0000
@@ -1,7 +1,4 @@
 magicbox.m:036: In `arguments_handler(di, uo, out)':
-magicbox.m:036:   error: invalid determinism for a predicate with I/O state
-magicbox.m:036:   arguments.
-magicbox.m:036: In `arguments_handler(di, uo, out)':
 magicbox.m:036:   error: determinism declaration not satisfied.
 magicbox.m:036:   Declared `cc_multi', inferred `cc_nondet'.
 magicbox.m:055:   call to `to_int(in, out)' can fail.
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cvs diff: Diffing vim
cvs diff: Diffing vim/after
cvs diff: Diffing vim/ftplugin
cvs diff: Diffing vim/syntax
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