From: Jia Tan <jiat0218@gmail.com>
Date: Wed, 28 Jun 2023 12:31:11 +0000 (+0800)
Subject: liblzma: Prevent uninitialzed warning in mt stream encoder.
X-Git-Tag: v5.2.13~81
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f9bf810441d37a1ab3626a67c9369ea27243915;p=thirdparty%2Fxz.git

liblzma: Prevent uninitialzed warning in mt stream encoder.

This change only impacts the compiler warning since it was impossible
for the wait_abs struct in stream_encode_mt() to be used before it was
initialized since mythread_condtime_set() will always be called before
mythread_cond_timedwait().

Since the mythread.h code is different between the POSIX and
Windows versions, this warning was only present on Windows builds.

Thanks to Arthur S for reporting the warning and providing an initial
patch.

(cherry picked from commit 1155471651ad456c5f90aee6435931fae65682bf)
---

diff --git a/src/liblzma/common/stream_encoder_mt.c b/src/liblzma/common/stream_encoder_mt.c
index 573a13b5..3a4c345c 100644
--- a/src/liblzma/common/stream_encoder_mt.c
+++ b/src/liblzma/common/stream_encoder_mt.c
@@ -692,7 +692,7 @@ stream_encode_mt(void *coder_ptr, const lzma_allocator *allocator,
 
 		// These are for wait_for_work().
 		bool has_blocked = false;
-		mythread_condtime wait_abs;
+		mythread_condtime wait_abs = { 0 };
 
 		while (true) {
 			mythread_sync(coder->mutex) {