From 80703f27a5caa8eae9879f6786fd9cb9edd1735b Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@ucc.asn.au>
Date: Thu, 11 Nov 2021 22:50:35 +0800
Subject: [PATCH] Codegen C - Fix incorrect handling of `ctlz` with `usize` on
 32-bit platforms (ref #78)

---
 src/trans/codegen_c.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/trans/codegen_c.cpp b/src/trans/codegen_c.cpp
index e9f2dbffe..c0f07925e 100644
--- a/src/trans/codegen_c.cpp
+++ b/src/trans/codegen_c.cpp
@@ -6172,7 +6172,7 @@ namespace {
                     m_of << ");";
                     return ;
                 }
-                else if( ty == ::HIR::CoreType::U64 || (ty == ::HIR::CoreType::Usize /*&& target_is_64_bit */) )
+                else if( ty == ::HIR::CoreType::U64 || (ty == ::HIR::CoreType::Usize && Target_GetPointerBits() > 32) )
                 {
                     emit_param(e.args.at(0)); m_of << " != 0 ? ";
                     if( name == "ctlz" || name == "ctlz_nonzero" ) {