From bd5bbdebf116bb03da335d0e18a55a5597b55548 Mon Sep 17 00:00:00 2001 From: nsfisis Date: Tue, 29 Jul 2025 06:04:29 +0900 Subject: feat: function main() now returns zero if no return value are explicitly provided --- codegen.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'codegen.c') diff --git a/codegen.c b/codegen.c index 2240b22..d290e95 100644 --- a/codegen.c +++ b/codegen.c @@ -437,6 +437,10 @@ void codegen_func(CodeGen* g, AstNode* ast) { codegen_func_prologue(g, ast); codegen_stmt(g, ast->node_body); + if (string_equals_cstr(&ast->name, "main")) { + // C99: 5.1.2.2.3 + printf(" mov rax, 0\n"); + } codegen_func_epilogue(g, ast); printf("\n"); -- cgit v1.2.3-70-g09d2