[m-dev.] diff: fix bug with tabling pragmas and mode inference

[Fergus Henderson]

Estimated hours taken: 0.25

compiler/make_hlds.m:
	Fix a bug: `pragma loop_check' declarations for predicates
	whose modes were inferred were being silently ignored.
	I changed it so it now reports an error if there are tabling
	pragmas for procedures with no declared modes.

Workspace: /home/mercury0/fjh/mercury
Index: compiler/make_hlds.m
===================================================================
RCS file: /home/mercury1/repository/mercury/compiler/make_hlds.m,v
retrieving revision 1.311
diff -u -d -r1.311 make_hlds.m
--- make_hlds.m	1999/10/25 03:49:11	1.311
+++ make_hlds.m	1999/10/29 07:11:50
@@ -3680,6 +3680,19 @@
 				io__write_string(".\n")
 			)
 		;
+			{ ExistingProcs = [] }
+		->
+			{ module_info_incr_errors(ModuleInfo1, ModuleInfo) }, 
+			prog_out__write_context(Context),
+			io__write_string("Error: `:- pragma "),
+			io__write_string(EvalMethodS),
+			io__write_string("' declaration for\n"), 
+			prog_out__write_context(Context),
+			io__write_string("  "),
+			hlds_out__write_simple_call_id(PredOrFunc, 
+				PredName/Arity),
+			io__write_string(" with no declared modes.\n")
+		;
 			{ set_eval_method_list(ExistingProcs, EvalMethod, 
 				Procs0, Procs) },
 			{ pred_info_set_procedures(PredInfo0, Procs, 

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
WWW: <http://www.cs.mu.oz.au/~fjh>  |  of excellence is a lethal habit"
PGP: finger fjh at 128.250.37.3        |     -- the last words of T. S. Garp.
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