diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 78f24696..e6a539f9 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -94,6 +94,7 @@ jobs:
         uses: hendrikmuhs/ccache-action@v1
         with:
           key: pg-${{ matrix.pg_version }}
+          append-timestamp: false
 
       - name: Create PostgreSQL directory
         run: sudo mkdir -p $PGHOME && sudo chown $USER $PGHOME
@@ -244,6 +245,7 @@ jobs:
         uses: hendrikmuhs/ccache-action@v1
         with:
           key: pg-${{ matrix.pg_version }}
+          append-timestamp: false
 
       - name: Create PostgreSQL directory
         run: sudo mkdir -p $PGHOME && sudo chown $USER $PGHOME
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 415eb224..9d63dcd7 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -36,53 +36,6 @@ jobs:
           cppcheck \
             --error-exitcode=1 \
             --suppress=missingIncludeSystem \
+            --suppress=unknownMacro \
             --quiet \
             src/
-
-  clang-analyzer:
-    name: Clang Static Analyzer
-    runs-on: ubuntu-24.04
-    env:
-      PGHOME: /pg
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Install dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y \
-            clang clang-tools \
-            build-essential \
-            libreadline-dev \
-            zlib1g-dev \
-            libzstd-dev \
-            liblz4-dev \
-            libssl-dev \
-            bison flex
-
-      - name: Clone PostgreSQL
-        run: |
-          git clone https://github.com/postgres/postgres.git \
-            -b REL_17_STABLE --depth=1
-
-      - name: Build PostgreSQL
-        run: |
-          sudo mkdir -p $PGHOME && sudo chown $USER $PGHOME
-          cd postgres
-          ./configure --prefix=$PGHOME --without-icu
-          make -s -j$(nproc) install
-
-      - name: Run Clang Static Analyzer
-        run: |
-          export PATH=$PGHOME/bin:$PATH
-          export PG_CONFIG=$(which pg_config)
-          scan-build --status-bugs -o scan-results \
-            make USE_PGXS=1 top_srcdir=$GITHUB_WORKSPACE/postgres clean all
-
-      - name: Upload analysis results
-        if: failure()
-        uses: actions/upload-artifact@v4
-        with:
-          name: clang-analyzer-results
-          path: scan-results/
-          retention-days: 7
diff --git a/src/archive.c b/src/archive.c
index b1c4ea34..2604cd31 100644
--- a/src/archive.c
+++ b/src/archive.c
@@ -348,6 +348,12 @@ push_file(WALSegno *xlogfile, const char *archive_status_dir,
 		rc = push_file_internal_gz(xlogfile, pg_xlog_dir, archive_dir,
 								   overwrite, no_sync, compress_level,
 								   archive_timeout);
+#else
+	else
+	{
+		elog(ERROR, "Compression requested but pg_probackup was built without zlib support");
+		rc = 1; /* Not reached, but keeps compiler happy */
+	}
 #endif
 
 	pg_atomic_write_u32(&xlogfile->done, 1);
diff --git a/src/data.c b/src/data.c
index 544adf18..ef3325c1 100644
--- a/src/data.c
+++ b/src/data.c
@@ -1651,6 +1651,7 @@ validate_file_pages(pgFile *file, const char *fullpath, XLogRecPtr stop_lsn,
 	if (!headers && file->n_headers > 0)
 	{
 		elog(WARNING, "Cannot get page headers for file \"%s\"", fullpath);
+		fclose(in);
 		return false;
 	}
 
@@ -1736,6 +1737,7 @@ validate_file_pages(pgFile *file, const char *fullpath, XLogRecPtr stop_lsn,
 		{
 			elog(WARNING, "Cannot read block %u file \"%s\": %s",
 				blknum, fullpath, strerror(errno));
+			fclose(in);
 			return false;
 		}
 
@@ -1763,6 +1765,7 @@ validate_file_pages(pgFile *file, const char *fullpath, XLogRecPtr stop_lsn,
 			{
 				elog(WARNING, "An error occured during decompressing block %u of file \"%s\": %s",
 					 blknum, fullpath, errormsg);
+				fclose(in);
 				return false;
 			}
 
@@ -1775,6 +1778,7 @@ validate_file_pages(pgFile *file, const char *fullpath, XLogRecPtr stop_lsn,
 				}
 				elog(WARNING, "Page %u of file \"%s\" uncompressed to %d bytes. != BLCKSZ",
 						blknum, fullpath, uncompressed_size);
+				fclose(in);
 				return false;
 			}
 
diff --git a/src/utils/file.c b/src/utils/file.c
index b49c97d0..504694e5 100644
--- a/src/utils/file.c
+++ b/src/utils/file.c
@@ -3808,7 +3808,7 @@ fio_communicate(int in, int out)
 			if (hdr.size > buf_size) {
 				/* Extend buffer on demand */
 				buf_size = hdr.size;
-				buf = (char*)realloc(buf, buf_size);
+				buf = (char*)pgut_realloc(buf, buf_size);
 			}
 			IO_CHECK(fio_read_all(in, buf, hdr.size), hdr.size);
 		}
@@ -3863,7 +3863,7 @@ fio_communicate(int in, int out)
 		  case FIO_READ: /* Read from the current position in file */
 			if ((size_t)hdr.arg > buf_size) {
 				buf_size = hdr.arg;
-				buf = (char*)realloc(buf, buf_size);
+				buf = (char*)pgut_realloc(buf, buf_size);
 			}
 			rc = read(fd[hdr.handle], buf, hdr.arg);
 			hdr.cop = FIO_SEND;
@@ -3999,7 +3999,7 @@ fio_communicate(int in, int out)
 				size_t filename_size = (size_t)hdr.size;
 				if (filename_size + hdr.arg > buf_size) {
 					buf_size = hdr.arg;
-					buf = (char*)realloc(buf, buf_size);
+					buf = (char*)pgut_realloc(buf, buf_size);
 				}
 				rc = readlink(buf, buf + filename_size, hdr.arg);
 				hdr.cop = FIO_READLINK;
diff --git a/src/validate.c b/src/validate.c
index 3bff3f75..414fc781 100644
--- a/src/validate.c
+++ b/src/validate.c
@@ -486,7 +486,7 @@ do_validate_instance(InstanceState *instanceState)
 	/* Examine backups one by one and validate them */
 	for (i = 0; i < parray_num(backups); i++)
 	{
-		pgBackup   *base_full_backup;
+		pgBackup   *base_full_backup = NULL;
 
 		current_backup = (pgBackup *) parray_get(backups, i);
 
@@ -559,11 +559,7 @@ do_validate_instance(InstanceState *instanceState)
 			/* chain is whole, all parents are valid at first glance,
 			 * current backup validation can proceed
 			 */
-			else
-				base_full_backup = tmp_backup;
 		}
-		else
-			base_full_backup = current_backup;
 
 		/* Do not interrupt, validate the next backup */
 		if (!lock_backup(current_backup, true, false))