From e99733c1c2ed6b6768ffbd030217abc0b8c28147 Mon Sep 17 00:00:00 2001
From: c0rp3n <ojhitchcock@gmail.com>
Date: Sun, 9 Jun 2024 15:02:18 +0100
Subject: [PATCH] Fix for #972 when a static is used by a stock Function

This adds stock functions to the maybe used set which seems most appropriate.

We can then mark all of the functions they refer too as maybe used also.
---
 compiler/semantics.cpp                         | 4 ++++
 tests/compile-only/ok-static-used-by-stock.inc | 7 +++++++
 tests/compile-only/ok-static-used-by-stock.sp  | 5 +++++
 3 files changed, 16 insertions(+)
 create mode 100644 tests/compile-only/ok-static-used-by-stock.inc
 create mode 100644 tests/compile-only/ok-static-used-by-stock.sp

diff --git a/compiler/semantics.cpp b/compiler/semantics.cpp
index 732d7927..45ee793b 100644
--- a/compiler/semantics.cpp
+++ b/compiler/semantics.cpp
@@ -2876,6 +2876,10 @@ bool Semantics::CheckFunctionDeclImpl(FunctionDecl* info) {
     if (info->as<MemberFunctionDecl>())
         maybe_used_.emplace_back(info);
 
+    // We never warn about unused stock functions.
+    if (info->is_stock())
+        maybe_used_.emplace_back(info);
+
     auto fwd = info->prototype();
     if (fwd && fwd->deprecate() && !info->is_stock())
         report(info->pos(), 234) << info->name() << fwd->deprecate();
diff --git a/tests/compile-only/ok-static-used-by-stock.inc b/tests/compile-only/ok-static-used-by-stock.inc
new file mode 100644
index 00000000..32fd7c52
--- /dev/null
+++ b/tests/compile-only/ok-static-used-by-stock.inc
@@ -0,0 +1,7 @@
+static void SomeHelperFunction()
+{}
+
+stock void HelpMe()
+{
+	SomeHelperFunction();
+}
diff --git a/tests/compile-only/ok-static-used-by-stock.sp b/tests/compile-only/ok-static-used-by-stock.sp
new file mode 100644
index 00000000..755df5c8
--- /dev/null
+++ b/tests/compile-only/ok-static-used-by-stock.sp
@@ -0,0 +1,5 @@
+// warnings_are_errors: true
+#include "ok-static-used-by-stock.inc"
+
+public void main()
+{}