[PATCH v1] Silence warning with gcc 15 and O0/01

From: Arne Schwabe <[email protected]>

When compiling with low optimisation level gcc complains

   route.c:1783:44: error: conversion from ‘int’ to ‘uint8_t’ {aka ‘unsigned char’} may change value [-Werror=conversion]
    1783 |             r6->network.s6_addr[byte--] &= (0xff << bits_to_clear);

With higher it apparently detects that this is cannot be and does not
trigger the warning. Explicitly cast to uint8_t to silence this warning

Change-Id: I96d3698601bb5aac3a0d7ac6ac5b5dd23c975517
Signed-off-by: Arne Schwabe <[email protected]>
Acked-by: Frank Lichtenheld <[email protected]>
Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1731
---

This change was reviewed on Gerrit and approved by at least one
developer. I request to merge it to master.

Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1731
This mail reflects revision 1 of this Change.

Acked-by according to Gerrit (reflected above):
Frank Lichtenheld <[email protected]>

        
diff --git a/src/openvpn/route.c b/src/openvpn/route.c
index 81ce867..8ea745d 100644
--- a/src/openvpn/route.c
+++ b/src/openvpn/route.c
@@ -1780,7 +1780,7 @@
         }
         else
         {
-            r6->network.s6_addr[byte--] &= (0xff << bits_to_clear);
+            r6->network.s6_addr[byte--] &= (uint8_t)(0xff << bits_to_clear);
             bits_to_clear = 0;
         }
     }


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