[trafficserver] branch 9.0.x updated: Skip compressible content type check with null strings.

[zwoop]

This is an automated email from the ASF dual-hosted git repository.

zwoop pushed a commit to branch 9.0.x
in repository https://gitbox.apache.org/repos/asf/trafficserver.git


The following commit(s) were added to refs/heads/9.0.x by this push:
     new 1dea393  Skip compressible content type check with null strings.
1dea393 is described below

commit 1dea393a37f31061cd4861ee81ed5aa0eda91628
Author: David Calavera <david.calav...@gmail.com>
AuthorDate: Sun Mar 29 13:30:01 2020 -0700

    Skip compressible content type check with null strings.
    
    Signed-off-by: David Calavera <david.calav...@gmail.com>
    (cherry picked from commit 3181f686e7ce1f8ca903dd5eec1136968f8024b4)
---
 plugins/compress/configuration.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/plugins/compress/configuration.cc 
b/plugins/compress/configuration.cc
index a8afd3f..67ced83 100644
--- a/plugins/compress/configuration.cc
+++ b/plugins/compress/configuration.cc
@@ -204,7 +204,10 @@ HostConfiguration::is_content_type_compressible(const char 
*content_type, int co
 
   for (StringContainer::iterator it = compressible_content_types_.begin(); it 
!= compressible_content_types_.end(); ++it) {
     const char *match_string = it->c_str();
-    bool exclude             = match_string[0] == '!';
+    if (match_string == nullptr) {
+      continue;
+    }
+    bool exclude = match_string[0] == '!';
 
     if (exclude) {
       ++match_string; // skip '!'