From 9b0804f6be58e02df2f9a1c0617a79dbf3d0c9ac Mon Sep 17 00:00:00 2001
From: Malik Olivier Boussejra <malik@boussejra.com>
Date: Wed, 30 May 2018 14:25:42 +0900
Subject: [PATCH] window_draw_list: Use c_char instead of i8

Target expects a c_char, which happens to be an i8 on x86, but it may be
something else on other platforms (e.g. u8 on ARM).
---
 src/window_draw_list.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/window_draw_list.rs b/src/window_draw_list.rs
index 4790b5f..b9f6f18 100644
--- a/src/window_draw_list.rs
+++ b/src/window_draw_list.rs
@@ -216,10 +216,12 @@ impl<'ui> WindowDrawList<'ui> {
         C: Into<ImColor>,
         T: AsRef<str>,
     {
+        use std::os::raw::c_char;
+
         let text = text.as_ref();
         unsafe {
-            let start = text.as_ptr() as *const i8;
-            let end = (start as usize + text.len()) as *const i8;
+            let start = text.as_ptr() as *const c_char;
+            let end = (start as usize + text.len()) as *const c_char;
             sys::ImDrawList_AddText(self.draw_list, pos.into(), col.into().into(), start, end)
         }
     }