From ee4f5a04ffa272cf9c9fa4a134fc71559d0851b3 Mon Sep 17 00:00:00 2001
From: RazvanN7 <razvan.nitu1305@gmail.com>
Date: Fri, 24 May 2024 12:47:02 +0300
Subject: [PATCH] Fix Bugzilla Issue 24560 - dmd crash on imported function
 with default parameter containing new

---
 compiler/src/dmd/expressionsem.d     | 15 +++++++++++++++
 compiler/test/compilable/test24560.d | 12 ++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 compiler/test/compilable/test24560.d

diff --git a/compiler/src/dmd/expressionsem.d b/compiler/src/dmd/expressionsem.d
index 9b6a45019b..481806d392 100644
--- a/compiler/src/dmd/expressionsem.d
+++ b/compiler/src/dmd/expressionsem.d
@@ -15286,6 +15286,9 @@ Expression resolveLoc(Expression exp, const ref Loc loc, Scope* sc)
 
     Expression visitStructLiteral(StructLiteralExp exp)
     {
+        if (!exp.elements)
+            return exp;
+
         foreach (ref element; *exp.elements)
         {
             if (element)
@@ -15304,6 +15307,9 @@ Expression resolveLoc(Expression exp, const ref Loc loc, Scope* sc)
         if (exp.lowering)
             exp.lowering = exp.lowering.resolveLoc(loc, sc);
 
+        if (!exp.arguments)
+            return exp;
+
         foreach (ref element; *exp.arguments)
         {
             if (element)
@@ -15315,6 +15321,9 @@ Expression resolveLoc(Expression exp, const ref Loc loc, Scope* sc)
 
     Expression visitCall(CallExp exp)
     {
+        if (!exp.arguments)
+            return exp;
+
         foreach (ref element; *exp.arguments)
         {
             if (element)
@@ -15328,6 +15337,9 @@ Expression resolveLoc(Expression exp, const ref Loc loc, Scope* sc)
     {
         exp.e1 = exp.e1.resolveLoc(loc, sc);
 
+        if (!exp.arguments)
+            return exp;
+
         foreach (ref element; *exp.arguments)
         {
             if (element)
@@ -15361,6 +15373,9 @@ Expression resolveLoc(Expression exp, const ref Loc loc, Scope* sc)
         if (exp.basis)
             exp.basis = exp.basis.resolveLoc(loc, sc);
 
+        if (!exp.elements)
+            return exp;
+
         foreach (ref element; *exp.elements)
         {
             if (element)
diff --git a/compiler/test/compilable/test24560.d b/compiler/test/compilable/test24560.d
new file mode 100644
index 0000000000..a4a4926622
--- /dev/null
+++ b/compiler/test/compilable/test24560.d
@@ -0,0 +1,12 @@
+// https://issues.dlang.org/show_bug.cgi?id=24560
+
+class C { }
+struct S
+{
+    static void fun(C heur = new C) { }
+}
+
+void main()
+{
+    S.fun();
+}