From 0fd9fa8c8a37c02aaf2df0a07ded9349d6c4dcdf Mon Sep 17 00:00:00 2001
From: Alex Dolski <alexd@n-ary.net>
Date: Mon, 12 Feb 2018 15:27:25 -0600
Subject: [PATCH] In case of an error, the output file is deleted only if it's
 a regular file

---
 src/bin/jp2/opj_decompress.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/bin/jp2/opj_decompress.c b/src/bin/jp2/opj_decompress.c
index 088f3a29..ddd7a69a 100644
--- a/src/bin/jp2/opj_decompress.c
+++ b/src/bin/jp2/opj_decompress.c
@@ -69,6 +69,8 @@
 
 #ifdef OPJ_HAVE_LIBLCMS2
 #include <lcms2.h>
+#include <sys/stat.h>
+
 #endif
 #ifdef OPJ_HAVE_LIBLCMS1
 #include <lcms.h>
@@ -1785,7 +1787,15 @@ int main(int argc, char **argv)
         /* destroy the codestream index */
         opj_destroy_cstr_index(&cstr_index);
 
-        if (failed) {
+        /* delete the destination file, if it's a regular file */
+        struct stat info;
+        int retval = lstat(parameters.outfile, &info);
+        int file = 1;
+        if (retval >= 0) {
+            file = S_ISREG(info.st_mode);
+        }
+
+        if (failed && file != 0) {
             (void)remove(parameters.outfile);    /* ignore return value */
         }
     }