From 20197ee0bc721b03b6121e2065a206446f1ac64d Mon Sep 17 00:00:00 2001
From: BrainStackOverFlow
 <48990146+BrainStackOverFlow@users.noreply.github.com>
Date: Thu, 17 Jul 2025 11:00:59 +0300
Subject: [PATCH] Fix unhandled AST_EXPR_EXT_SIZEOF Error

---
 src/ast.c    | 4 ++++
 src/utils.h  | 8 ++++++++
 src/x86/cg.c | 2 +-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/ast.c b/src/ast.c
index 72164bd..2928784 100644
--- a/src/ast.c
+++ b/src/ast.c
@@ -396,6 +396,10 @@ static void ast_usedef_pass(AST *tlc, AST *a, AST *wholestmt) {
 		if(a->stmtReturn.val) {
 			ast_usedef_pass(tlc, a->stmtReturn.val, wholestmt);
 		}
+	}  else if (a->nodeKind == AST_EXPR_EXT_SIZEOF) {
+		if (a->exprExtSizeOf.ofExpr) {
+			ast_usedef_pass(tlc, a->exprExtSizeOf.ofExpr, wholestmt);
+		}
 	} else {
 		stahp_node(a, "ast_usedef_pass: unhandled %s", AST_KIND_STR[a->nodeKind]);
 	}
diff --git a/src/utils.h b/src/utils.h
index e3d3f5a..abf9b7a 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -7,6 +7,7 @@
 #include<stdlib.h>
 #include<stdarg.h>
 #include<stdio.h>
+#include <string.h>
 
 inline static size_t djb2(const char *str) {
 	size_t hash = 5381;
@@ -54,4 +55,11 @@ __attribute__((format(printf, 1, 2))) static inline char *malp(const char *fmt,
 	return str;
 }
 
+inline static int is_str_equal_check_null(const char *s1, const char *s2) {
+	if (!s1 || !s2) {
+		return 0;
+	}
+	return !strcmp(s1, s2);
+}
+
 #endif
diff --git a/src/x86/cg.c b/src/x86/cg.c
index cf21819..5cee188 100644
--- a/src/x86/cg.c
+++ b/src/x86/cg.c
@@ -333,7 +333,7 @@ void cg_chunk(CGState *cg, AST *a) {
 			
 		} else if(s->nodeKind == AST_STMT_ASSIGN) {
 			
-			if(s->stmtAssign.to && is_xop(s->stmtAssign.what) == XOP_NOT_MEM && is_xop(s->stmtAssign.to) == XOP_NOT_MEM && !strcmp(xop(cg->tlc, s->stmtAssign.what), xop(cg->tlc, s->stmtAssign.to))) {
+			if(s->stmtAssign.to && is_xop(s->stmtAssign.what) == XOP_NOT_MEM && is_xop(s->stmtAssign.to) == XOP_NOT_MEM && is_str_equal_check_null(xop(cg->tlc, s->stmtAssign.what), xop(cg->tlc, s->stmtAssign.to))) {
 				// It's a noop
 			} else if(s->stmtAssign.to) {
 				if(x86_imul_supported() && s->stmtAssign.to->nodeKind == AST_EXPR_BINARY_OP && s->stmtAssign.to->exprBinOp.operator == BINOP_MUL) {