From 5ce275145c7b1c8dc537846fe9a0522045be9d6f Mon Sep 17 00:00:00 2001
From: Dana Robinson <43805+derobins@users.noreply.github.com>
Date: Mon, 13 Feb 2023 10:36:17 -0800
Subject: Fix uninitialized variable in pio_engine.c (#2463)

---
 tools/src/h5perf/pio_engine.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/tools/src/h5perf/pio_engine.c b/tools/src/h5perf/pio_engine.c
index 26968e3..5c99443 100644
--- a/tools/src/h5perf/pio_engine.c
+++ b/tools/src/h5perf/pio_engine.c
@@ -505,18 +505,18 @@ do_write(results *res, file_descr *fd, parameters *parms, long ndsets, off_t nby
          void *buffer)
 {
     int            ret_code = SUCCESS;
-    int            rc; /*routine return code                   */
+    int            rc; /* Return code */
     long           ndset;
     size_t         blk_size;            /* The block size to subdivide the xfer buffer into */
     off_t          nbytes_xfer;         /* Total number of bytes transferred so far */
     size_t         nbytes_xfer_advance; /* Number of bytes transferred in a single I/O operation */
     size_t         nbytes_toxfer;       /* Number of bytes to transfer a particular time */
     char           dname[64];
-    off_t          dset_offset = 0; /*dataset offset in a file              */
-    off_t          bytes_begin[2];  /*first elmt this process transfer      */
-    off_t          bytes_count;     /*number of elmts this process transfer */
-    off_t          snbytes = 0;     /*size of a side of the dataset square  */
-    unsigned char *buf_p;           /* Current buffer pointer               */
+    off_t          dset_offset    = 0;      /* Dataset offset in a file */
+    off_t          bytes_begin[2] = {0, 0}; /* First elmt this process transfer */
+    off_t          bytes_count;             /* Number of elmts this process transfer */
+    off_t          snbytes = 0;             /* Size of a side of the dataset square */
+    unsigned char *buf_p;                   /* Current buffer pointer */
 
     /* POSIX variables */
     off_t file_offset;         /* File offset of the next transfer     */
@@ -1530,11 +1530,11 @@ do_read(results *res, file_descr *fd, parameters *parms, long ndsets, off_t nbyt
     size_t         nbytes_xfer_advance; /* Number of bytes transferred in a single I/O operation */
     size_t         nbytes_toxfer;       /* Number of bytes to transfer a particular time */
     char           dname[64];
-    off_t          dset_offset = 0; /*dataset offset in a file              */
-    off_t          bytes_begin[2];  /*first elmt this process transfer      */
-    off_t          bytes_count;     /*number of elmts this process transfer */
-    off_t          snbytes = 0;     /*size of a side of the dataset square */
-    unsigned char *buf_p;           /* Current buffer pointer               */
+    off_t          dset_offset    = 0;      /* Dataset offset in a file */
+    off_t          bytes_begin[2] = {0, 0}; /* First elmt this process transfer */
+    off_t          bytes_count;             /* Number of elmts this process transfer */
+    off_t          snbytes = 0;             /* Size of a side of the dataset square */
+    unsigned char *buf_p;                   /* Current buffer pointer */
 
     /* POSIX variables */
     off_t file_offset;         /* File offset of the next transfer    */
-- 
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