commit a8844eaceb1df92635a327fc4edba082b102a2ff
author Kuang-che Wu <kcwu@chromium.org> Mon Oct 11 15:47:20 2021 +0800
committer Kuang-che Wu <kcwu@chromium.org> Mon Oct 11 15:47:20 2021 +0800
tree ade72938c3a59a115c5d9cedd3f82f06a7747753
parent da865cbb9d289d0f782a1c33d85261903c60d624

afl-showmap don't create empty "-" file

src/afl-showmap.c

diff --git a/src/afl-showmap.c b/src/afl-showmap.c
index 75b0ff9..a04c1f5 100644
--- a/src/afl-showmap.c
+++ b/src/afl-showmap.c
@@ -242,9 +242,11 @@
   if (cmin_mode &&
       (fsrv->last_run_timed_out || (!caa && child_crashed != cco))) {
 
-    // create empty file to prevent error messages in afl-cmin
-    fd = open(outfile, O_WRONLY | O_CREAT | O_EXCL, DEFAULT_PERMISSION);
-    close(fd);
+    if (strcmp(outfile, "-")) {
+      // create empty file to prevent error messages in afl-cmin
+      fd = open(outfile, O_WRONLY | O_CREAT | O_EXCL, DEFAULT_PERMISSION);
+      close(fd);
+    }
     return ret;
 
   }