diff --git a/src/bin/jp2/convertpng.c b/src/bin/jp2/convertpng.c

index 00f596e..af3f91e 100644

--- a/src/bin/jp2/convertpng.c

+++ b/src/bin/jp2/convertpng.c

@@ -75,10 +75,10 @@ opj_image_t *pngtoimage(const char *read_idf, opj_cparameters_t * params)

     png_uint_32  width, height = 0U;

     int color_type;

     FILE *reader = NULL;

-    OPJ_BYTE** rows = NULL;

-    OPJ_INT32* row32s = NULL;

+    OPJ_BYTE** volatile rows = NULL;

+    OPJ_INT32* volatile row32s = NULL;

     /* j2k: */

-    opj_image_t *image = NULL;

+    opj_image_t* volatile image = NULL;

     opj_image_cmptparm_t cmptparm[4];

     OPJ_UINT32 nr_comp;

     OPJ_BYTE sigbuf[8];

diff --git a/src/bin/jp2/converttif.c b/src/bin/jp2/converttif.c

index 9d1037a..8d5002a 100644

--- a/src/bin/jp2/converttif.c

+++ b/src/bin/jp2/converttif.c

@@ -720,7 +720,7 @@ int imagetotif(opj_image_t * image, const char *outfile)

         TIFFClose(tif);

         return 1;

     }

-    rowStride = (int64_t)((width * numcomps * bps + 7U) / 8U);

+    rowStride = ((int64_t)width * numcomps * bps + 7U) / 8U;

     if (rowStride != strip_size) {

         fprintf(stderr, "Invalid TIFF strip size\n");

         TIFFClose(tif);

@@ -1283,8 +1283,6 @@ opj_image_t* tiftoimage(const char *filename, opj_cparameters_t *parameters)

     TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &tiSpp);

     TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &tiPhoto);

     TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &tiPC);

-    w = (int)tiWidth;

-    h = (int)tiHeight;

     if (tiSpp == 0 || tiSpp > 4) { /* should be 1 ... 4 */

         fprintf(stderr, "tiftoimage: Bad value for samples per pixel == %d.\n"

@@ -1451,7 +1449,7 @@ opj_image_t* tiftoimage(const char *filename, opj_cparameters_t *parameters)

         return NULL;

     }

-    rowStride = (int64_t)((tiWidth * tiSpp * tiBps + 7U) / 8U);

+    rowStride = ((int64_t)tiWidth * tiSpp * tiBps + 7U) / 8U;

     buffer32s = (OPJ_INT32 *)malloc(sizeof(OPJ_INT32) * tiWidth * tiSpp);

     if (buffer32s == NULL) {

         _TIFFfree(buf);

diff --git a/src/lib/openjp2/t2.c b/src/lib/openjp2/t2.c

index 1481e16..d46bfb4 100644

--- a/src/lib/openjp2/t2.c

+++ b/src/lib/openjp2/t2.c

@@ -821,6 +821,7 @@ static OPJ_BOOL opj_t2_encode_packet(OPJ_UINT32 tileno,

             opj_event_msg(p_manager, EVT_ERROR,

                           "opj_t2_encode_packet(): accessing precno=%u >= %u\n",

                           precno, res->pw * res->ph);

+            opj_bio_destroy(bio);

             return OPJ_FALSE;

         }