diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -7491,6 +7491,10 @@
 TreeTransform<Derived>::TransformCompoundStmt(CompoundStmt *S,
                                               bool IsStmtExpr) {
   Sema::CompoundScopeRAII CompoundScope(getSema());
+  Sema::FPFeaturesStateRAII FPSave(getSema());
+  if (S->hasStoredFPFeatures())
+    getSema().resetFPOptions(
+        S->getStoredFPFeatures().applyOverrides(getSema().getLangOpts()));
 
   const Stmt *ExprResult = S->getStmtExprResult();
   bool SubStmtInvalid = false;
diff --git a/clang/test/SemaCXX/template-64605.cpp b/clang/test/SemaCXX/template-64605.cpp
new file mode 100644
--- /dev/null
+++ b/clang/test/SemaCXX/template-64605.cpp
@@ -0,0 +1,23 @@
+// RUN: %clang_cc1 -ast-dump -ast-dump-filter=b_64605 %s | FileCheck %s
+
+// https://github.com/llvm/llvm-project/issues/64605
+
+#pragma STDC FENV_ACCESS ON
+template <typename>
+int b_64605() {
+  int x;
+  if ((float)0xFFFFFFFF != (float)0x100000000) {
+    x = 1;
+  }
+  return x;
+}
+int f() { return b_64605<void>(); }
+
+// CHECK:      ImplicitCastExpr {{.*}} 'float' <IntegralToFloating> RoundingMath=1 AllowFEnvAccess=1
+// CHECK-NEXT: IntegerLiteral {{.*}} 4294967295
+
+// CHECK:      FunctionDecl {{.*}} b_64605 'int ()' implicit_instantiation
+// CHECK-NEXT: TemplateArgument type 'void'
+
+// CHECK:      ImplicitCastExpr {{.*}} 'float' <IntegralToFloating> RoundingMath=1 AllowFEnvAccess=1 
+// CHECK-NEXT: IntegerLiteral {{.*}} 4294967295