From 266cc69f1973773228534f074febd153c472b949 Mon Sep 17 00:00:00 2001
From: Bung <crc32@qq.com>
Date: Wed, 24 May 2023 21:30:14 +0800
Subject: [PATCH] fix #21896 asign parameter to global variable generates
 invalid code (#21900)

---
 compiler/semstmts.nim   | 2 +-
 tests/global/t21896.nim | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100644 tests/global/t21896.nim

diff --git a/compiler/semstmts.nim b/compiler/semstmts.nim
index 579af973ef..6e2fb92528 100644
--- a/compiler/semstmts.nim
+++ b/compiler/semstmts.nim
@@ -563,7 +563,7 @@ proc semVarMacroPragma(c: PContext, a: PNode, n: PNode): PNode =
         return result
 
 template isLocalSym(sym: PSym): bool =
-  sym.kind in {skVar, skLet} and not
+  sym.kind in {skVar, skLet, skParam} and not
     ({sfGlobal, sfPure} * sym.flags != {} or
       sfCompileTime in sym.flags) or
       sym.kind in {skProc, skFunc, skIterator} and
diff --git a/tests/global/t21896.nim b/tests/global/t21896.nim
new file mode 100644
index 0000000000..c7765c4dd1
--- /dev/null
+++ b/tests/global/t21896.nim
@@ -0,0 +1,9 @@
+discard """
+  errormsg: "cannot assign local to global variable"
+  line: 7
+"""
+
+proc example(a:int) =
+  let b {.global.} = a
+
+example(1)