Merge pull request #2425 from rainers/issue19498

fix issue 19498 - undefined identifier rt_loadLibraryW
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

Author: dlang-bot

src/core/runtime.d

@@ -21,6 +21,8 @@ else version (WatchOS)
 
 /// C interface for Runtime.loadLibrary
 extern (C) void* rt_loadLibrary(const char* name);
+/// ditto
+version (Windows) extern (C) void* rt_loadLibraryW(const wchar* name);
 
 /// C interface for Runtime.unloadLibrary, returns 1/0 instead of bool
 extern (C) int rt_unloadLibrary(void* ptr);

test/shared/src/loadlibwin.d

@@ -0,0 +1,8 @@
+// https://issues.dlang.org/show_bug.cgi?id=19498
+void main()
+{
+    import core.runtime;
+    auto kernel32 = Runtime.loadLibrary("kernel32.dll");
+    assert(kernel32);
+    Runtime.unloadLibrary(kernel32);
+}

win64.mak

@@ -105,7 +105,10 @@ test_hash:
 test_stdcpp:
 	$(MAKE) -f test\stdcpp\win64.mak "DMD=$(DMD)" MODEL=$(MODEL) "VCDIR=$(VCDIR)" DRUNTIMELIB=$(DRUNTIME) "CC=$(CC)" test
 
-test_all:  test_uuid test_aa test_hash test_stdcpp
+test_loadlib:
+	$(DMD) -m$(MODEL) -conf= -Isrc -defaultlib=$(DRUNTIME) -run test\shared\src\loadlibwin.d
+
+test_all:  test_uuid test_aa test_hash test_stdcpp test_loadlib
 
 ################### zip/install/clean ##########################