From 34f63396cb2b7a0c1f5163c9b02c5148a21b64a4 Mon Sep 17 00:00:00 2001
From: Todd Strader <todd.strader@gmail.com>
Date: Mon, 10 Nov 2025 16:44:41 -0500
Subject: [PATCH] Fix `free` collision (#6675)

---
 src/V3EmitCImp.cpp               | 2 +-
 test_regress/t/t_var_rsvd_port.v | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/V3EmitCImp.cpp b/src/V3EmitCImp.cpp
index 55cc93ad0..c6b213240 100644
--- a/src/V3EmitCImp.cpp
+++ b/src/V3EmitCImp.cpp
@@ -253,7 +253,7 @@ class EmitCImp final : public EmitCFunc {
         } else {
             putns(modp, "void " + modName + "::dtor() {\n");
         }
-        putns(modp, "VL_DO_DANGLING(free(const_cast<char*>(vlNamep)), vlNamep);\n");
+        putns(modp, "VL_DO_DANGLING(std::free(const_cast<char*>(vlNamep)), vlNamep);\n");
         emitSystemCSection(modp, VSystemCSectionType::DTOR);
         puts("}\n");
     }
diff --git a/test_regress/t/t_var_rsvd_port.v b/test_regress/t/t_var_rsvd_port.v
index 5d00596fe..a9d81abe0 100644
--- a/test_regress/t/t_var_rsvd_port.v
+++ b/test_regress/t/t_var_rsvd_port.v
@@ -13,6 +13,7 @@ module t (/*AUTOARG*/
 
    reg  vector; // OK, as not public
    reg  switch /*verilator public*/;    // Bad
+   reg  free /*verilator public*/;    // OK, not actually a keyword
 
    initial begin
       $write("*-* All Finished *-*\n");