From 229d21ef728110099798ab445436b7564da63ea1 Mon Sep 17 00:00:00 2001
From: Patrick Pelissier <patrick.pelissier@gmail.com>
Date: Mon, 18 Feb 2019 15:46:53 +0100
Subject: [PATCH] Add assume

---
 m-string.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/m-string.h b/m-string.h
index c4d1fcb4..3abb3919 100644
--- a/m-string.h
+++ b/m-string.h
@@ -214,6 +214,7 @@ stringi_fit2size (string_t v, size_t size_alloc)
       abort();
       return;
     }
+    M_ASSUME(ptr != &v->u.stack.buffer[1]);
     if (string_int_stack_p(v)) {
       /* Copy the stack allocation into the heap allocation */
       memcpy(ptr, &v->u.stack.buffer[1], v->u.stack.buffer[0]+1);