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From b4700bc09d55ac17ff6bef9b0a867f6de527be17 Mon Sep 17 00:00:00 2001
From: Ariadne Conill <ariadne@dereferenced.org>
Date: Tue, 27 Apr 2021 09:37:40 -0600
Subject: [PATCH] use calloc instead of malloc to allocate arrays

---
 src/bin/jp2/opj_compress.c   | 4 ++--
 src/bin/jp2/opj_decompress.c | 5 ++---
 src/bin/jp2/opj_dump.c       | 6 +++---
 3 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/src/bin/jp2/opj_compress.c b/src/bin/jp2/opj_compress.c
index 4cc513452..d8f894cb1 100644
--- a/src/bin/jp2/opj_compress.c
+++ b/src/bin/jp2/opj_compress.c
@@ -1910,9 +1910,9 @@ int main(int argc, char **argv)
         num_images = get_num_images(img_fol.imgdirpath);
         dirptr = (dircnt_t*)malloc(sizeof(dircnt_t));
         if (dirptr) {
-            dirptr->filename_buf = (char*)malloc(num_images * OPJ_PATH_LEN * sizeof(
+            dirptr->filename_buf = (char*)calloc(num_images, OPJ_PATH_LEN * sizeof(
                     char)); /* Stores at max 10 image file names*/
-            dirptr->filename = (char**) malloc(num_images * sizeof(char*));
+            dirptr->filename = (char**) calloc(num_images, sizeof(char*));
             if (!dirptr->filename_buf) {
                 ret = 0;
                 goto fin;
diff --git a/src/bin/jp2/opj_decompress.c b/src/bin/jp2/opj_decompress.c
index 487e3fa18..e54e54fce 100644
--- a/src/bin/jp2/opj_decompress.c
+++ b/src/bin/jp2/opj_decompress.c
@@ -1357,14 +1357,13 @@ int main(int argc, char **argv)
             return EXIT_FAILURE;
         }
         /* Stores at max 10 image file names */
-        dirptr->filename_buf = (char*)malloc(sizeof(char) *
-                                             (size_t)num_images * OPJ_PATH_LEN);
+        dirptr->filename_buf = calloc((size_t) num_images, sizeof(char) * OPJ_PATH_LEN);
         if (!dirptr->filename_buf) {
             failed = 1;
             goto fin;
         }
 
-        dirptr->filename = (char**) malloc((size_t)num_images * sizeof(char*));
+        dirptr->filename = (char**) calloc((size_t) num_images, sizeof(char*));
 
         if (!dirptr->filename) {
             failed = 1;
diff --git a/src/bin/jp2/opj_dump.c b/src/bin/jp2/opj_dump.c
index 754a39dd0..4e19c6177 100644
--- a/src/bin/jp2/opj_dump.c
+++ b/src/bin/jp2/opj_dump.c
@@ -457,7 +457,7 @@ int main(int argc, char *argv[])
     opj_codestream_info_v2_t* cstr_info = NULL;
     opj_codestream_index_t* cstr_index = NULL;
 
-    OPJ_INT32 num_images, imageno;
+    int num_images, imageno;
     img_fol_t img_fol;
     dircnt_t *dirptr = NULL;
 
@@ -486,13 +486,13 @@ int main(int argc, char *argv[])
         if (!dirptr) {
             return EXIT_FAILURE;
         }
-        dirptr->filename_buf = (char*)malloc((size_t)num_images * OPJ_PATH_LEN * sizeof(
+        dirptr->filename_buf = (char*) calloc((size_t) num_images, OPJ_PATH_LEN * sizeof(
                 char)); /* Stores at max 10 image file names*/
         if (!dirptr->filename_buf) {
             free(dirptr);
             return EXIT_FAILURE;
         }
-        dirptr->filename = (char**) malloc((size_t)num_images * sizeof(char*));
+        dirptr->filename = (char**) calloc((size_t) num_images, sizeof(char*));
 
         if (!dirptr->filename) {
             goto fails;