From 1e63e8d8b6559855eca6efac6eec18f0546ecafd Mon Sep 17 00:00:00 2001
From: gracefu <81774659+gracefuu@users.noreply.github.com>
Date: Sun, 11 Apr 2021 22:34:23 +0800
Subject: [PATCH] stage2 x86_64: fix codegen ensureCapacity bug for function
 calls

Co-authored-by: joachimschmidt557 <joachim.schmidt557@outlook.com>
---
 src/codegen.zig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/codegen.zig b/src/codegen.zig
index 0d65150bf2..6e734dad90 100644
--- a/src/codegen.zig
+++ b/src/codegen.zig
@@ -2424,6 +2424,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
                             .x86_64 => {
                                 try self.genSetReg(inst.base.src, Type.initTag(.u32), .rax, .{ .memory = got_addr });
                                 // callq *%rax
+                                try self.code.ensureCapacity(self.code.items.len + 2);
                                 self.code.appendSliceAssumeCapacity(&[2]u8{ 0xff, 0xd0 });
                             },
                             .aarch64 => {