[trafficserver] branch master updated: Fix CID-1518256 (#10403)

[mochen]

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mochen pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/trafficserver.git


The following commit(s) were added to refs/heads/master by this push:
     new 8fcc9c351c Fix CID-1518256 (#10403)
8fcc9c351c is described below

commit 8fcc9c351cbb2768989ccfe2ea97daa0a6d6198c
Author: Mo Chen <moc...@apache.org>
AuthorDate: Thu Sep 14 15:59:01 2023 -0500

    Fix CID-1518256 (#10403)
    
    * Fix CID-1518256
    * Read the return value from read() into a dummy variable.
---
 iocore/net/AsyncSignalEventIO.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/iocore/net/AsyncSignalEventIO.cc b/iocore/net/AsyncSignalEventIO.cc
index f6f615456c..0a3483fb05 100644
--- a/iocore/net/AsyncSignalEventIO.cc
+++ b/iocore/net/AsyncSignalEventIO.cc
@@ -35,11 +35,14 @@ AsyncSignalEventIO::start(EventLoop l, int fd, int events)
 void
 AsyncSignalEventIO::process_event(int flags)
 {
+  [[maybe_unused]] ssize_t ret;
 #if HAVE_EVENTFD
   uint64_t counter;
-  static_cast<void>(read(_fd, &counter, sizeof(uint64_t)));
+  ret = read(_fd, &counter, sizeof(uint64_t));
+  ink_assert(ret >= 0);
 #else
   char dummy[1024];
-  static_cast<void>(read(_fd, &dummy[0], 1024));
+  ret = read(_fd, &dummy[0], 1024);
+  ink_assert(ret >= 0);
 #endif
 }