[SYCL] Fix integration header on Windows

Disable printing anonymous tag locations because Windows
file path separators are treated as escape sequences and cause errors
when integration header is compiled with host compiler.

Author: Fznamznon

clang/lib/Sema/SemaSYCL.cpp

@@ -5074,6 +5074,10 @@ void SYCLIntegrationHeader::emit(raw_ostream &O) {
   PrintingPolicy Policy(LO);
   Policy.SuppressTypedefs = true;
   Policy.SuppressUnwrittenScope = true;
+  // Disable printing anonymous tag locations because on Windows
+  // file path separators are treated as escape sequences and cause errors
+  // when integration header is compiled with host compiler.
+  Policy.AnonymousTagLocations = 0;
   SYCLFwdDeclEmitter FwdDeclEmitter(O, S.getLangOpts());
 
   // Predefines which need to be set for custom host compilation

clang/test/CodeGenSYCL/code_location.cpp

@@ -22,7 +22,7 @@ int test1() {
 // CHECK:   }
 // CHECK:   static constexpr const char* getFunctionName() {
 // CHECK: #ifndef NDEBUG
-// CHECK:     return "";
+// CHECK:     return "class (lambda)";
 // CHECK: #else
 // CHECK:     return "";
 // CHECK: #endif
@@ -214,7 +214,7 @@ int test5() {
 // CHECK:   }
 // CHECK:   static constexpr const char* getFunctionName() {
 // CHECK: #ifndef NDEBUG
-// CHECK:     return "NS::";
+// CHECK:     return "NS::class (lambda)";
 // CHECK: #else
 // CHECK:     return "";
 // CHECK: #endif