From: Wolfgang (Blub) Bumiller <blub@speed.at>
Date: Sun, 19 Aug 2012 17:54:15 +0000 (+0200)
Subject: functions which have no living values but store_return values may cause the allocator... 
X-Git-Tag: 0.1-rc1~149
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=14210a62ef7ff1529f93b5c050553049e1bedd4a;p=xonotic%2Fgmqcc.git

functions which have no living values but store_return values may cause the allocator to be run with no allocations being made - in this case we shouldn't try accessing the empty array and simply exit the allocator
---

diff --git a/ir.c b/ir.c
index 158e207..0a6a8da 100644
--- a/ir.c
+++ b/ir.c
@@ -1894,6 +1894,10 @@ bool ir_function_allocate_locals(ir_function *self)
         }
     }
 
+    if (!alloc.sizes) {
+        goto cleanup;
+    }
+
     /* Adjust slot positions based on sizes */
     if (!function_allocator_positions_add(&alloc, 0))
         goto error;