https://github.com/chaos/scrub/commit/9c9b3f28439835f44329228e2435f3f89e7dcee1

From 9c9b3f28439835f44329228e2435f3f89e7dcee1 Mon Sep 17 00:00:00 2001
From: Sergio Correia <scorreia@redhat.com>
Date: Wed, 17 Mar 2021 08:08:07 -0300
Subject: [PATCH] Minor fixes to keep clang static analyzer happy

- Initialize `written' and `checked' in scrub()
- Initialize `mp->thd' before using it in refill_init()
- Do not assign return of read_all() to `n', if we do not read this
  value, in writesig()
--- a/src/fillfile.c
+++ b/src/fillfile.c
@@ -122,6 +122,7 @@ refill_init(struct memstruct **mpp, refill_t refill, int memsize)
     }
     mp->size = memsize;
     mp->refill = refill;
+    mp->thd = 0;
 #if WITH_PTHREADS
     if (!no_threads) {
         if ((mp->err = pthread_create(&mp->thd, NULL, refill_thread, mp))) {
--- a/src/scrub.c
+++ b/src/scrub.c
@@ -445,7 +445,7 @@ scrub(char *path, off_t size, const sequence_t *seq, int bufsize,
     prog_t p;
     char sizestr[80];
     bool isfull = false;
-    off_t written, checked;
+    off_t written = (off_t)-1, checked = (off_t)-1;
     int pcol = progress_col(seq);
 
     if (!(buf = alloc_buffer(bufsize))) {
--- a/src/sig.c
+++ b/src/sig.c
@@ -74,7 +74,7 @@ writesig(char *path)
         goto nomem;
     if ((fd = open(path, O_RDWR)) < 0)
         goto error;
-    if ((n = read_all(fd, buf, blocksize)) < 0)
+    if (read_all(fd, buf, blocksize) < 0)
         goto error;
     memcpy(buf, SCRUB_MAGIC, sizeof(SCRUB_MAGIC));
     if (lseek(fd, 0, SEEK_SET) < 0)