Merge remote-tracking branch 'origin/topic/awelzel/2709-colon-colon-for-global'

* origin/topic/awelzel/2709-colon-colon-for-global:
  ci: Bust Ubuntu 22.10 image cache
  Support :: prefix to reference global namespace, deprecate GLOBAL::

CHANGES

@@ -1,3 +1,11 @@
+6.1.0-dev.202 | 2023-07-12 17:29:26 +0200
+
+  * ci: Bust Ubuntu 22.10 image cache (Arne Welzel, Corelight)
+
+    Cirrus jobs failing to pull the image, try rebuilding.
+
+  * GH-2709: Support :: prefix to reference global namespace, deprecate GLOBAL:: (Arne Welzel, Corelight)
+
 6.1.0-dev.198 | 2023-07-11 16:16:56 -0700
 
   * dce-rpc: Test cases for unbounded state growth (Arne Welzel, Corelight)

NEWS

@@ -39,6 +39,10 @@ New Functionality
   table is prefixed with "module " and their value will have the ``type_name``
   field set to "module".
 
+- Identifiers in the global scope can now be referenced and defined from within
+  modules by prefixing their names with ``::``. Previously, these required an
+  explicit ``GLOBAL::`` prefix to be used. Using ``GLOBAL::`` has been deprecated.
+
 Changed Functionality
 ---------------------
 
@@ -55,6 +59,9 @@ Removed Functionality
 Deprecated Functionality
 ------------------------
 
+- Accessing globals with ``GLOBAL::name`` has been deprecated and will be
+  removed with Zeek 7.1. Use ``::name`` instead.
+
 Zeek 6.0.0
 ==========
 

VERSION

@@ -1 +1 @@
-6.1.0-dev.198
+6.1.0-dev.202

ci/ubuntu-22.10/Dockerfile

@@ -4,7 +4,7 @@ ENV DEBIAN_FRONTEND="noninteractive" TZ="America/Los_Angeles"
 
 # A version field to invalidate Cirrus's build cache when needed, as suggested in
 # https://github.com/cirruslabs/cirrus-ci-docs/issues/544#issuecomment-566066822
-ENV DOCKERFILE_VERSION 20230413
+ENV DOCKERFILE_VERSION 20230711
 
 RUN apt-get update && apt-get -y install \
     bc \

src/Scope.cc

@@ -108,22 +108,47 @@ TraversalCode Scope::Traverse(TraversalCallback* cb) const
 const IDPtr& lookup_ID(const char* name, const char* curr_module, bool no_global,
                        bool same_module_only, bool check_export)
 	{
+	bool explicit_global = zeek::util::starts_with(name, "::");
+
+	// Ad-hoc deprecation if a name starts with "GLOBAL::". In v7.1 we could
+	// tweak {ID} to reject GLOBAL::, or switch this warning to error instead.
+	static std::string deprecated_prefix = util::fmt("%s::", GLOBAL_MODULE_NAME);
+	if ( zeek::util::starts_with(name, deprecated_prefix) )
+		reporter->Deprecation(util::fmt("Remove in v7.1: Use :: instead of %s (%s)",
+		                                deprecated_prefix.c_str(), name));
+
 	std::string fullname = make_full_var_name(curr_module, name);
-
 	std::string ID_module = extract_module_name(fullname.c_str());
-	bool need_export = check_export &&
-	                   (ID_module != GLOBAL_MODULE_NAME && ID_module != curr_module);
 
-	for ( auto s_i = scopes.rbegin(); s_i != scopes.rend(); ++s_i )
+	// This is mostly for sanity (and should be covered by syntax)
+	if ( explicit_global && same_module_only && ID_module != GLOBAL_MODULE_NAME )
 		{
-		const auto& id = (*s_i)->Find(fullname);
+		reporter->Error("lookup_ID for %s with :: prefix for non-global module called", name);
+		return ID::nil;
+		}
 
-		if ( id )
+	if ( explicit_global && no_global )
+		{
+		reporter->Error("lookup_ID  for %s with :: prefix, but no_global=true", name);
+		return ID::nil;
+		}
+
+	if ( ! explicit_global )
+		{
+		bool need_export = check_export &&
+		                   (ID_module != GLOBAL_MODULE_NAME && ID_module != curr_module);
+
+		for ( auto s_i = scopes.rbegin(); s_i != scopes.rend(); ++s_i )
 			{
-			if ( need_export && ! id->IsExport() && ! in_debug )
-				reporter->Error("identifier is not exported: %s", fullname.c_str());
+			const auto& id = (*s_i)->Find(fullname);
 
-			return id;
+			if ( id )
+				{
+				if ( need_export && ! id->IsExport() && ! in_debug )
+					reporter->Error("identifier is not exported: %s", fullname.c_str());
+
+				return id;
+				}
 			}
 		}
 

src/module_util.cc

@@ -28,6 +28,7 @@ TEST_CASE("module_util streq")
 TEST_CASE("module_util extract_module_name")
 	{
 	CHECK(extract_module_name("mod") == GLOBAL_MODULE_NAME);
+	CHECK(extract_module_name("::var") == GLOBAL_MODULE_NAME);
 	CHECK(extract_module_name("mod::") == "mod");
 	CHECK(extract_module_name("mod::var") == "mod");
 	}
@@ -38,7 +39,7 @@ string extract_module_name(const char* name)
 	string module_name = name;
 	string::size_type pos = module_name.rfind("::");
 
-	if ( pos == string::npos )
+	if ( pos == string::npos || pos == 0 )
 		return GLOBAL_MODULE_NAME;
 
 	module_name.erase(pos);
@@ -89,16 +90,18 @@ TEST_CASE("module_util make_full_var_name")
 	CHECK(make_full_var_name(nullptr, "GLOBAL::var") == "var");
 	CHECK(make_full_var_name(GLOBAL_MODULE_NAME, "var") == "var");
 	CHECK(make_full_var_name(nullptr, "notglobal::var") == "notglobal::var");
-	CHECK(make_full_var_name(nullptr, "::var") == "::var");
+	CHECK(make_full_var_name(nullptr, "::var") == "var");
 
 	CHECK(make_full_var_name("module", "var") == "module::var");
 	CHECK(make_full_var_name("module::", "var") == "module::var");
-	CHECK(make_full_var_name("", "var") == "::var");
+	CHECK(make_full_var_name("", "var") == "var");
+	CHECK(make_full_var_name("", "::var") == "var");
 	}
 
 string make_full_var_name(const char* module_name, const char* var_name)
 	{
-	if ( ! module_name || streq(module_name, GLOBAL_MODULE_NAME) || strstr(var_name, "::") )
+	if ( ! module_name || streq(module_name, "") || streq(module_name, GLOBAL_MODULE_NAME) ||
+	     strstr(var_name, "::") )
 		{
 		if ( streq(GLOBAL_MODULE_NAME, extract_module_name(var_name).c_str()) )
 			return extract_var_name(var_name);

src/parse.y

@@ -21,6 +21,7 @@
 %token TOK_STRING TOK_SUBNET TOK_SWITCH TOK_TABLE
 %token TOK_TIME TOK_TIMEOUT TOK_TYPE TOK_VECTOR TOK_WHEN
 %token TOK_WHILE TOK_AS TOK_IS
+%token TOK_GLOBAL_ID
 
 %token TOK_ATTR_ADD_FUNC TOK_ATTR_DEFAULT TOK_ATTR_OPTIONAL TOK_ATTR_REDEF
 %token TOK_ATTR_DEL_FUNC TOK_ATTR_EXPIRE_FUNC
@@ -55,7 +56,7 @@
 %nonassoc TOK_AS TOK_IS
 
 %type <b> opt_no_test opt_no_test_block opt_deep when_flavor
-%type <str> TOK_ID TOK_PATTERN_TEXT
+%type <str> TOK_ID TOK_PATTERN_TEXT TOK_GLOBAL_ID lookup_identifier
 %type <id> local_id global_id def_global_id event_id global_or_event_id resolve_id begin_lambda case_type
 %type <id_l> local_id_list case_type_list
 %type <ic> init_class
@@ -925,7 +926,7 @@ expr:
 			$$ = new ScheduleExpr({AdoptRef{}, $2}, {AdoptRef{}, $4});
 			}
 
-	|	TOK_ID
+	|	lookup_identifier
 			{
 			set_location(@1);
 			auto id = lookup_ID($1, current_module.c_str());
@@ -1977,7 +1978,7 @@ stmt_list:
 	;
 
 event:
-		TOK_ID '(' opt_expr_list ')'
+		lookup_identifier '(' opt_expr_list ')'
 			{
 			set_location(@1, @4);
 			const auto& id = lookup_ID($1, current_module.c_str());
@@ -2180,7 +2181,7 @@ event_id:
 	;
 
 global_or_event_id:
-		TOK_ID
+		lookup_identifier
 			{
 			set_location(@1);
 			auto id = lookup_ID($1, current_module.c_str(), false,
@@ -2218,7 +2219,7 @@ global_or_event_id:
 
 
 resolve_id:
-		TOK_ID
+		lookup_identifier
 			{
 			set_location(@1);
 			auto id = lookup_ID($1, current_module.c_str());
@@ -2231,6 +2232,20 @@ resolve_id:
 			}
 	;
 
+lookup_identifier:
+		TOK_ID
+	|
+		TOK_GLOBAL_ID
+			{
+			if ( is_export )
+				{
+				reporter->Error("cannot use :: prefix in export section: %s", $1);
+				YYERROR;
+				}
+			}
+
+	;
+
 opt_assert_msg:
 		',' expr
 			{ $$ = $2; }

src/scan.l

@@ -233,6 +233,8 @@ D	[0-9]+
 HEX	[0-9a-fA-F]+
 IDCOMPONENT [A-Za-z_][A-Za-z_0-9]*
 ID	{IDCOMPONENT}(::{IDCOMPONENT})*
+/* Token including including :: prefix for lookups of global identifiers */
+GLOBAL_ID	::{IDCOMPONENT}
 IP6 ("["({HEX}:){7}{HEX}"]")|("["0x{HEX}({HEX}|:)*"::"({HEX}|:)*"]")|("["({HEX}|:)*"::"({HEX}|:)*"]")|("["({HEX}:){6}({D}"."){3}{D}"]")|("["({HEX}|:)*"::"({HEX}|:)*({D}"."){3}{D}"]")
 FILE	[^ \t\r\n]+
 PREFIX	[^ \t\r\n]+
@@ -549,6 +551,12 @@ F	RET_CONST(zeek::val_mgr->False()->Ref())
 	return TOK_ID;
 	}
 
+{GLOBAL_ID}	{
+		yylval.str = zeek::util::copy_string(yytext);
+		last_id_tok = yylval.str;
+		return TOK_GLOBAL_ID;
+		}
+
 {D}		{
 		RET_CONST(zeek::val_mgr->Count(static_cast<zeek_uint_t>(strtoull(yytext, (char**) NULL, 10))).release())
 		}

testing/btest/Baseline/language.deprecate-global/.stderr

@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+warning in <...>/deprecate-global.zeek, line 22: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::test_function)
+warning in <...>/deprecate-global.zeek, line 26: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::X)

testing/btest/Baseline/language.deprecate-global/out

@@ -0,0 +1,4 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+X, shadows ::X (42)
+::X, 42
+GLOBAL::X, 42

testing/btest/Baseline/language.event-shadowing/.stderr

@@ -0,0 +1 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.

testing/btest/Baseline/language.event-shadowing/out

@@ -0,0 +1,2 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+::zeek_init()

testing/btest/Baseline/language.global-colon-colon-errors-2/.stderr

@@ -0,0 +1,2 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+error in <...>/global-colon-colon-errors.zeek, line 3: syntax error, at or near "::disabling_analyzer"

testing/btest/Baseline/language.global-colon-colon-errors-3/.stderr

@@ -0,0 +1,2 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+error in <...>/global-colon-colon-errors.zeek, line 5: cannot use :: prefix in export section: ::c

testing/btest/Baseline/language.global-colon-colon-errors-4/.stderr

@@ -0,0 +1,2 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+error in <...>/global-colon-colon-errors.zeek, line 2: syntax error, at or near "::a"

testing/btest/Baseline/language.global-colon-colon-errors-5/.stderr

@@ -0,0 +1,2 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+error in <...>/global-colon-colon-errors.zeek, line 4: unknown identifier ::missing, at or near "::missing"

testing/btest/Baseline/language.global-colon-colon-errors-6/.stderr

@@ -0,0 +1,2 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+error in <...>/global-colon-colon-errors.zeek, line 9: unknown identifier MyModule::f, at or near "MyModule::f"

testing/btest/Baseline/language.global-colon-colon-errors/.stderr

@@ -0,0 +1,2 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+error in <...>/global-colon-colon-errors.zeek, line 7: syntax error, at or near "::a"

testing/btest/Baseline/language.global-colon-colon-redef/.stderr

@@ -0,0 +1 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.

testing/btest/Baseline/language.global-colon-colon-redef/out

@@ -0,0 +1,5 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+connection, MyModule::connection, {
+[y] = [type_name=count, log=F, value=<uninitialized>, default_val=<uninitialized>, optional=T]
+}
+::connection, connection, [type_name=count, log=F, value=<uninitialized>, default_val=<uninitialized>, optional=T]

testing/btest/Baseline/language.global-colon-colon/.stderr

@@ -0,0 +1,9 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+warning in <...>/global-colon-colon.zeek, line 67: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::X)
+warning in <...>/global-colon-colon.zeek, line 75: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::my_hook)
+warning in <...>/global-colon-colon.zeek, line 82: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::func)
+warning in <...>/global-colon-colon.zeek, line 89: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::funcX)
+warning in <...>/global-colon-colon.zeek, line 110: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::X)
+warning in <...>/global-colon-colon.zeek, line 118: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::my_hook)
+warning in <...>/global-colon-colon.zeek, line 125: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::func)
+warning in <...>/global-colon-colon.zeek, line 132: Remove in v7.1: Use :: instead of GLOBAL:: (GLOBAL::funcX)

testing/btest/Baseline/language.global-colon-colon/out

@@ -0,0 +1,75 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+(MyModule) print X
+  MyModule X
+(MyModule) print MyModule::X
+  MyModule X
+(MyModule) print GLOBAL::X
+  global X
+(MyModule) print ::X
+  global X
+(MyModule) hook my_hook()
+  MyModule::my_hook() (in GLOBAL)
+  MyModule::my_hook()
+(MyModule) hook MyModule::my_hook()
+  MyModule::my_hook() (in GLOBAL)
+  MyModule::my_hook()
+(MyModule) hook GLOBAL::my_hook()
+  my_hook() (in GLOBAL)
+  ::my_hook() (in GLOBAL)
+  ::my_hook() (in MyModule using ::)
+(MyModule) hook ::my_hook()
+  my_hook() (in GLOBAL)
+  ::my_hook() (in GLOBAL)
+  ::my_hook() (in MyModule using ::)
+(MyModule) call func()
+  MyModule::func()
+(MyModule) call GLOBAL::func()
+  GLOBAL::func()
+(MyModule) call ::func()
+  GLOBAL::func()
+(MyModule) call funcX()
+  ::funcX() (in MyModule)
+(MyModule) call GLOBAL::funcX()
+  ::funcX() (in MyModule)
+(MyModule) call ::funcX()
+  ::funcX() (in MyModule)
+(G) print X
+  global X
+(G) print MyModule::X
+  MyModule X
+(G) print GLOBAL::X
+  global X
+(G) print ::X
+  global X
+(G) hook my_hook()
+  my_hook() (in GLOBAL)
+  ::my_hook() (in GLOBAL)
+  ::my_hook() (in MyModule using ::)
+(G) MyModule::my_hook()
+  MyModule::my_hook() (in GLOBAL)
+  MyModule::my_hook()
+(G) hook GLOBAL::my_hook()
+  my_hook() (in GLOBAL)
+  ::my_hook() (in GLOBAL)
+  ::my_hook() (in MyModule using ::)
+(G) hook ::my_hook()
+  my_hook() (in GLOBAL)
+  ::my_hook() (in GLOBAL)
+  ::my_hook() (in MyModule using ::)
+(G) call func()
+  GLOBAL::func()
+(G) call GLOBAL::func()
+  GLOBAL::func()
+(G) call ::func()
+  GLOBAL::func()
+(G) call funcX()
+  ::funcX() (in MyModule)
+(G) call GLOBAL::funcX()
+  ::funcX() (in MyModule)
+(G) call ::funcX()
+  ::funcX() (in MyModule)
+  MyModule::my_event() (in MyModule)
+  MyModule::my_event() (in GLOBAL)
+  my_event() (in GLOBAL)
+  ::my_event() in (in GLOBAL)
+  ::my_event() (in MyModule)

testing/btest/language/deprecate-global.zeek

@@ -0,0 +1,27 @@
+# @TEST-DOC: Adapt in v7.1 to check for errors upon GLOBAL accesses.
+
+# @TEST-EXEC: zeek -b %INPUT >out
+# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath btest-diff out
+# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath btest-diff .stderr
+
+module GLOBAL;
+
+function test_function() { }
+
+global X = 42;
+
+
+module MyModule;
+
+global X = fmt("shadows ::X (%s)", ::X);
+
+event zeek_init()
+	{
+	test_function();
+	::test_function();
+	GLOBAL::test_function();
+
+	print "X", X;
+	print "::X", ::X;
+	print "GLOBAL::X", GLOBAL::X;
+	}

testing/btest/language/enum-scope.zeek

@@ -11,4 +11,4 @@ export {
 	type foo: enum { a, b };
 }
 
-print GLOBAL::a, GLOBAL::b, a, b, c;
+print ::a, ::b, a, b, c;

testing/btest/language/event-shadowing.zeek

@@ -0,0 +1,23 @@
+# @TEST-DOC: Shadow zeek_init() event, demonstrate ::zeek_init() usage.
+#
+# @TEST-EXEC: zeek -b %INPUT >out
+# @TEST-EXEC: btest-diff out
+# @TEST-EXEC: btest-diff .stderr
+
+module MyModule;
+
+export {
+	## MyModule::zeek_init() shadows global zeek_init() event.
+	global zeek_init: event();
+}
+
+# This is never invoked!
+event zeek_init()
+	{
+	print "MyModule::zeek_init() - FAIL";
+	}
+
+event ::zeek_init()
+	{
+	print "::zeek_init()";
+	}

testing/btest/language/global-colon-colon-errors.zeek

@@ -0,0 +1,45 @@
+# @TEST-EXEC-FAIL: zeek -b %INPUT >&2
+# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath btest-diff .stderr
+
+event zeek_init()
+	{
+	# Do not allow local variables with ::prefix.
+	local ::a = 1;
+	}
+
+@TEST-START-NEXT
+
+# Do not allow :: prefix for an identifier containing a module.
+hook ::Analyzer::disabling_analyzer(c: connection, atype: AllAnalyzers::Tag, aid: count) { }
+
+@TEST-START-NEXT
+# Do not allow exporting names with ::
+module MyModule;
+
+export {
+	global ::c = 1;
+	global ::h: hook();
+}
+
+@TEST-START-NEXT
+# Do not allow :: prefix on parameter names.
+function f(::a: string) { }
+
+@TEST-START-NEXT
+# Non-existing global identifier.
+event zeek_init()
+	{
+	print ::missing;
+	}
+
+@TEST-START-NEXT
+
+module MyModule;
+
+function ::f() {
+}
+
+event zeek_init()
+	{
+	MyModule::f();
+	}

testing/btest/language/global-colon-colon-redef.zeek

@@ -0,0 +1,26 @@
+# @TEST-DOC: redef of ::type works when global type is shadowed by module.
+
+# @TEST-EXEC: zeek -b %INPUT >out
+# @TEST-EXEC: btest-diff out
+# @TEST-EXEC: btest-diff .stderr
+
+module MyModule;
+
+# Module private connection type.
+type connection: record { };
+
+# Redefing the moduleconnection record.
+redef record connection += {
+	y: count &optional;
+};
+
+# Redefing the global connection record.
+redef record ::connection += {
+	x: count &optional;
+};
+
+event zeek_init()
+	{
+	print "connection", connection, record_fields(connection);
+	print "::connection", ::connection, record_fields(::connection)["x"];
+	}

testing/btest/language/global-colon-colon.zeek

@@ -0,0 +1,165 @@
+# @TEST-DOC: GLOBAL:: and just :: are the same, adapt with v7.1 to remove GLOBAL:: usage.
+# @TEST-EXEC: zeek -b %INPUT >out
+
+# @TEST-EXEC: btest-diff out
+# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath btest-diff .stderr
+
+module GLOBAL;
+
+global X = "global X";
+
+global my_hook: hook();
+global my_event: event();
+
+function func() {
+	print "  GLOBAL::func()";
+}
+
+module MyModule;
+
+export {
+	global X = "MyModule X";
+	global my_hook: hook();
+	global my_event: event();
+	global func: function();
+}
+
+# This implements MyModule::my_hook()
+hook my_hook() &priority=9
+	{
+	print "  MyModule::my_hook()";
+	}
+
+# This implements GLOBAL::my_hook()
+hook ::my_hook() &priority=8
+	{
+	print "  ::my_hook() (in MyModule using ::)";
+	}
+
+event my_event() &priority=9
+	{
+	print "  MyModule::my_event() (in MyModule)";
+	}
+
+event ::my_event() &priority=8
+	{
+	print "  ::my_event() (in MyModule)";
+	}
+
+function func()
+	{
+	print "  MyModule::func()";
+	}
+
+# This one is a bit funky: Defines a global function while in a module.
+function ::funcX()
+	{
+	print "  ::funcX() (in MyModule)";
+	}
+
+event zeek_init() &priority=5
+	{
+	print "(MyModule) print X";
+	print fmt("  %s", X);
+	print "(MyModule) print MyModule::X";
+	print fmt("  %s", MyModule::X);
+	print "(MyModule) print GLOBAL::X";
+	print fmt("  %s", GLOBAL::X);
+	print "(MyModule) print ::X";
+	print fmt("  %s", ::X);
+	print "(MyModule) hook my_hook()";
+	hook my_hook();  # This uses MyModule::my_hook();
+	print "(MyModule) hook MyModule::my_hook()";
+	hook MyModule::my_hook();  # This uses MyModule::hook();
+	print "(MyModule) hook GLOBAL::my_hook()";
+	hook GLOBAL::my_hook();
+	print "(MyModule) hook ::my_hook()";
+	hook ::my_hook();
+
+	print "(MyModule) call func()";
+	func();
+	print "(MyModule) call GLOBAL::func()";
+	GLOBAL::func();
+	print "(MyModule) call ::func()";
+	::func();
+
+	print "(MyModule) call funcX()";
+	funcX();
+	print "(MyModule) call GLOBAL::funcX()";
+	GLOBAL::funcX();
+	print "(MyModule) call ::funcX()";
+	::funcX();
+
+	# This schedules MyEvent::my_event()
+	event my_event();
+
+	# This schedules the GLOBAL::my_event();
+	event ::my_event();
+	}
+
+
+module GLOBAL;
+
+event zeek_init() &priority=5
+	{
+	print "(G) print X";
+	print fmt("  %s", X);
+	print "(G) print MyModule::X";
+	print fmt("  %s", MyModule::X);
+	print "(G) print GLOBAL::X";
+	print fmt("  %s", GLOBAL::X);
+	print "(G) print ::X";
+	print fmt("  %s", ::X);
+	print "(G) hook my_hook()";
+	hook my_hook();  # This uses GLOBAL::my_hook();
+	print "(G) MyModule::my_hook()";
+	hook MyModule::my_hook();  # This uses MyModule::hook();
+	print "(G) hook GLOBAL::my_hook()";
+	hook GLOBAL::my_hook();
+	print "(G) hook ::my_hook()";
+	hook ::my_hook();
+
+	print "(G) call func()";
+	func();
+	print "(G) call GLOBAL::func()";
+	GLOBAL::func();
+	print "(G) call ::func()";
+	::func();
+
+	print "(G) call funcX()";
+	funcX();
+	print "(G) call GLOBAL::funcX()";
+	GLOBAL::funcX();
+	print "(G) call ::funcX()";
+	::funcX();
+	}
+
+hook my_hook() &priority=10
+	{
+	print "  my_hook() (in GLOBAL)";
+	}
+
+hook ::my_hook() &priority=10
+	{
+	print "  ::my_hook() (in GLOBAL)";
+	}
+
+hook MyModule::my_hook() &priority=10
+	{
+	print "  MyModule::my_hook() (in GLOBAL)";
+	}
+
+event MyModule::my_event() &priority=9
+	{
+	print "  MyModule::my_event() (in GLOBAL)";
+	}
+
+event my_event() &priority=10
+	{
+	print "  my_event() (in GLOBAL)";
+	}
+
+event ::my_event() &priority=10
+	{
+	print "  ::my_event() in (in GLOBAL)";
+	}

testing/btest/language/no-module.zeek

@@ -28,7 +28,7 @@ event zeek_init()
 {
 	test_case( "function", T );
 	test_case( "global variable", num == 123 );
-	test_case( "fully qualified global variable", GLOBAL::num == 123 ); # test for BIT-1758 : GLOBAL scope ID discovery bug
+	test_case( "fully qualified global variable", ::num == 123 );
 	test_case( "const", daysperyear == 365 );
 	event testevent( "foo" );
 }