[mono] Remove mono_corlib_version, it has not been maintained for some time.

Fixes #47767.

Author: vargaz

src/mono/CMakeLists.txt

@@ -62,29 +62,6 @@ if(ENABLE_MINIMAL)
   process_enable_minimal()
 endif()
 
-#
-# This is the version of the corlib-runtime interface. When
-# making changes to this interface (by changing the layout
-# of classes the runtime knows about, changing icall signature or
-# semantics etc), change this variable.
-#
-# This must be unique relative to corlib interface and semantics.
-#
-# If you change corlib such that a runtime change is required, or
-# vice versa, change this string. Examples include removing icalls,
-# adding icalls, changing icall signatures, and changing type layouts
-# that both sides know.
-#
-# It is an arbitrary string and should be parsed as such.
-# A guid works and is encouraged.
-#
-# There is no ordering of corlib versions, no old or new,
-# an exact match is required between corlib and runtime.
-#
-# This line is parsed by other tools, it should remain in the format they expect.
-#
-set(MONO_CORLIB_VERSION 1A5E0066-58DC-428A-B21C-0AD6CDAE2789)
-
 set(DISABLE_MDB 1)
 set(DISABLE_COM 1)
 set(DISABLE_PERFCOUNTERS 1)

src/mono/System.Private.CoreLib/GenerateMonoCoreLibVersionFile.targets

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-  <!-- Generate Mono corelib version file -->
-  <Import Project="GenerateMonoCoreLibVersionFile.targets" />
-
   <PropertyGroup>
     <EnableDefaultItems>false</EnableDefaultItems>
     <DisableImplicitFrameworkReferences>true</DisableImplicitFrameworkReferences>

src/mono/System.Private.CoreLib/System.Private.CoreLib.csproj

@@ -129,8 +129,6 @@
 		</type>
 
 		<type fullname="System.Environment">
-			<!-- appdomain.c: mono_get_corlib_version -->
-			<field name="mono_corlib_version" />
 			<method name="get_StackTrace" />
 		</type>
 

src/mono/System.Private.CoreLib/src/ILLink/ILLink.Descriptors.xml

@@ -309,37 +309,6 @@ mono_runtime_init_checked (MonoDomain *domain, MonoThreadStartCB start_cb, MonoT
 	HANDLE_FUNCTION_RETURN ();
 }
 
-static char*
-mono_get_corlib_version (void)
-{
-	ERROR_DECL (error);
-
-	MonoClass *klass;
-	MonoClassField *field;
-
-	klass = mono_class_load_from_name (mono_defaults.corlib, "System", "Environment");
-	mono_class_init_internal (klass);
-	field = mono_class_get_field_from_name_full (klass, "mono_corlib_version", NULL);
-	if (!field)
-		return NULL;
-
-	if (! (field->type->attrs & (FIELD_ATTRIBUTE_STATIC | FIELD_ATTRIBUTE_LITERAL)))
-		return NULL;
-
-	char *value;
-	MonoTypeEnum field_type;
-	const char *data = mono_class_get_field_default_value (field, &field_type);
-	if (field_type != MONO_TYPE_STRING)
-		return NULL;
-	mono_metadata_read_constant_value (data, field_type, &value, error);
-	mono_error_assert_ok (error);
-
-	char *res = mono_string_from_blob (value, error);
-	mono_error_assert_ok (error);
-
-	return res;
-}
-
 /**
  * mono_check_corlib_version:
  * Checks that the corlib that is loaded matches the version of this runtime.
@@ -364,18 +333,6 @@ mono_check_corlib_version_internal (void)
 	return NULL;
 #else
 	char *result = NULL;
-	char *version = mono_get_corlib_version ();
-	if (!version) {
-		result = g_strdup_printf ("expected corlib string (%s) but not found or not string", MONO_CORLIB_VERSION);
-		goto exit;
-	}
-	if (strcmp (version, MONO_CORLIB_VERSION) != 0) {
-		result = g_strdup_printf ("The runtime did not find the mscorlib.dll it expected. "
-					  "Expected interface version %s but found %s. Check that "
-					  "your runtime and class libraries are matching.",
-					  MONO_CORLIB_VERSION, version);
-		goto exit;
-	}
 
 	/* Check that the managed and unmanaged layout of MonoInternalThread matches */
 	guint32 native_offset;
@@ -384,8 +341,6 @@ mono_check_corlib_version_internal (void)
 	managed_offset = mono_field_get_offset (mono_class_get_field_from_name_full (mono_defaults.internal_thread_class, "last", NULL));
 	if (native_offset != managed_offset)
 		result = g_strdup_printf ("expected InternalThread.last field offset %u, found %u. See InternalThread.last comment", native_offset, managed_offset);
-exit:
-	g_free (version);
 	return result;
 #endif
 }