From 80bef6162aac355227242fc8b8cb4610df7cd75d Mon Sep 17 00:00:00 2001
From: herman ten brugge <hermantenbrugge@home.nl>
Date: Sun, 3 Aug 2025 10:29:16 +0200
Subject: [PATCH] Unshare typedef definitions if it used more then once.

---
 tccgen.c        | 2 +-
 tests/tcctest.c | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/tccgen.c b/tccgen.c
index c25a2243..145d88de 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -1253,7 +1253,7 @@ static void patch_type(Sym *sym, CType *type)
     } else {
         if ((sym->type.t & VT_ARRAY) && type->ref->c >= 0) {
             /* set array size if it was omitted in extern declaration */
-            sym->type.ref->c = type->ref->c;
+            sym->type.ref = type->ref;
         }
         if ((type->t ^ sym->type.t) & VT_STATIC)
             tcc_warning("storage mismatch for redefinition of '%s'",
diff --git a/tests/tcctest.c b/tests/tcctest.c
index efc31e26..9f920777 100644
--- a/tests/tcctest.c
+++ b/tests/tcctest.c
@@ -1767,9 +1767,13 @@ struct complexinit2 cix22 = {
 };
 
 typedef int arrtype1[];
+arrtype1 sinit19;
+arrtype1 sinit20;
 arrtype1 sinit19 = {1};
 arrtype1 sinit20 = {2,3};
 typedef int arrtype2[3];
+arrtype2 sinit21;
+arrtype2 sinit22;
 arrtype2 sinit21 = {4};
 arrtype2 sinit22 = {5,6,7};