From faba0ee1c1464aecb10cdae7ea41fe8982fc0a2f Mon Sep 17 00:00:00 2001
From: normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 25 Jun 2018 02:52:34 +0000
Subject: mjit.c: avoid signed pointer comparisons (fix for 32-bit)

ptrdiff_t is a signed type, use uintptr_t instead for unsigned
comparisons.  This is needed to allow MJIT tests to pass on
32-bit x86 GNU/Linux.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63746 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 mjit.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mjit.c b/mjit.c
index b207986c2b..f1e442f4f5 100644
--- a/mjit.c
+++ b/mjit.c
@@ -946,7 +946,7 @@ convert_unit_to_func(struct rb_mjit_unit *unit)
 #endif
     }
 
-    if ((ptrdiff_t)func > (ptrdiff_t)LAST_JIT_ISEQ_FUNC) {
+    if ((uintptr_t)func > (uintptr_t)LAST_JIT_ISEQ_FUNC) {
         struct rb_mjit_unit_node *node = create_list_node(unit);
         CRITICAL_SECTION_START(3, "end of jit");
         add_to_list(node, &active_units);
@@ -1101,7 +1101,7 @@ mark_ec_units(rb_execution_context_t *ec)
     const rb_control_frame_t *cfp;
     rb_control_frame_t *last_cfp = ec->cfp;
     const rb_control_frame_t *end_marker_cfp;
-    ptrdiff_t i, size;
+    uintptr_t i, size;
 
     if (ec->vm_stack == NULL)
         return;
-- 
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