From c8377cb9ce170728f1232c5d9f54b890bc18373c Mon Sep 17 00:00:00 2001
From: Ivan Maidanski <ivmai@mail.ru>
Date: Thu, 20 Dec 2018 02:14:16 +0300
Subject: [PATCH] Workaround 'nl-result_buf is out of bounds' cppcheck false
 positive

* os_dep.c [NEED_CALLINFO && LINUX && !SMALL_CONFIG] (GC_print_callers):
Replace nl-result_buf to (word)nl-COVERT_DATAFLOW(result_buf).
---
 os_dep.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/os_dep.c b/os_dep.c
index f71469c4..25d893ab 100644
--- a/os_dep.c
+++ b/os_dep.c
@@ -4789,8 +4789,10 @@ GC_INNER void GC_print_callers(struct callinfo info[NFRAMES])
                     *nl = ':';
                   }
                   if (strncmp(result_buf, "main",
-                              nl != NULL ? (size_t)(nl - result_buf)
-                                         : result_len) == 0) {
+                              nl != NULL
+                                ? (size_t)((word)nl /* a cppcheck workaround */
+                                           - COVERT_DATAFLOW(result_buf))
+                                : result_len) == 0) {
                     stop = TRUE;
                   }
                 }
-- 
2.50.1