gentoo-overlay/x11-misc/polybar/files/polybar-3.3.1-i3ipcpp-gcc9.patch

From d4e4786be35b48d72dc7e59cf85ec34a90d129b5 Mon Sep 17 00:00:00 2001
From: patrick96 <p.ziegler96@gmail.com>
Date: Sun, 6 May 2018 18:25:32 +0200
Subject: [PATCH] fix(gcc): Fix -Wstringop-truncation warning

As mentioned in [1], gcc >=8 will complain, if strncpy truncates the
source string or gcc can prove there is no NUL terminating byte.

The header_t.magic field is a non-NUL terminated 6 byte string, so we
use memcpy here

[1] https://github.com/jaagr/polybar/issues/1215
---
 src/ipc-util.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ipc-util.cpp b/src/ipc-util.cpp
index 2e8ac8e..d9851ee 100644
--- a/lib/i3ipcpp/src/ipc-util.cpp
+++ b/lib/i3ipcpp/src/ipc-util.cpp
@@ -34,7 +34,7 @@ buf_t::buf_t(uint32_t  payload_size) : size(sizeof(header_t) + payload_size) {
 	data = new uint8_t[size];
 	header = (header_t*)data;
 	payload = (char*)(data + sizeof(header_t));
-	strncpy(header->magic, g_i3_ipc_magic.c_str(), sizeof(header->magic));
+	memcpy(header->magic, g_i3_ipc_magic.c_str(), sizeof(header->magic));
 	header->size = payload_size;
 	header->type = 0x0;
 }