Coverity fixes, round one #7374

bnoordhuis · 2016-06-22T22:33:09Z

Issues pointed out by Coverity.

CI: https://ci.nodejs.org/job/node-test-pull-request/3056/

addaleax · 2016-06-22T23:36:50Z

LGTM, CI failure seems to be infrastructure-related

mhdawson · 2016-06-23T13:36:58Z

LGTM

cjihrig · 2016-06-23T13:47:36Z

LGTM

santigimeno · 2016-06-23T14:04:05Z

src/fs_event_wrap.cc

-  bool initialized_;
-  enum encoding encoding_;
+  bool initialized_ = false;
+  enum encoding encoding_ = kDefaultEncoding;
 };


just wondering, could these have been initialized in the initializer list of FSEventWrap::FSEventWrap?

Could have, yes, but I think the C++11 way of assigning at definition is clearer; no need to look up the constructor to see if and how it's assigned.

Understood. Thanks

jasnell · 2016-06-27T15:41:12Z

LGTM

bnoordhuis · 2016-06-29T09:26:10Z

Rebased with no structural changes. New CI: https://ci.nodejs.org/job/node-test-pull-request/3117/

Pointed out by Coverity. PR-URL: nodejs#7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Pointed out by Coverity. Not really a bug because it's assigned before use but explicit assignment in the constructor is more obviously correct. PR-URL: nodejs#7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

This commit adds a CHECK that verifies that the file event watcher is not started twice, which would be indicative of a bug in lib/fs.js. PR-URL: nodejs#7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Remove TLSWrap::write_queue_size_, it's not used anywhere. PR-URL: nodejs#7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

The code assigned the result of EVP_get_digestbyname() to data members called md_ that were not used outside the initialization functions. PR-URL: nodejs#7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

PR-URL: nodejs#7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Pointed out by Coverity. Introduced in commit 5b8e1da from September 2011 ("Initial pass at zlib bindings".) The asynchronous version of Write() used a pointer to a stack-allocated buffer on flush. A mitigating factor is that zlib does not dereference the pointer for zero-sized writes but it's still technically UB. PR-URL: nodejs#7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Pointed out by Coverity. Introduced in commit 05d30d5 from July 2015 ("fs: implemented WriteStream#writev"). WriteBuffers() leaked memory in the synchronous uv_fs_write() error path when trying to write > 1024 buffers. PR-URL: nodejs#7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Pointed out by Coverity. Introduced in commits 3546383 ("process_wrap: avoid leaking memory when throwing due to invalid arguments") and fa4eb47 ("bindings: add spawn_sync bindings"). The return statements inside the if blocks were dead code because their guard conditions always evaluated to false. Remove them. PR-URL: nodejs#7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Pointed out by Coverity. Introduced in commits 3546383 ("process_wrap: avoid leaking memory when throwing due to invalid arguments") and fa4eb47 ("bindings: add spawn_sync bindings"). The return statements inside the if blocks were dead code because their guard conditions always evaluated to false. Remove them. PR-URL: #7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Pointed out by Coverity. Introduced in commit 05d30d5 from July 2015 ("fs: implemented WriteStream#writev"). WriteBuffers() leaked memory in the synchronous uv_fs_write() error path when trying to write > 1024 buffers. PR-URL: #7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Pointed out by Coverity. PR-URL: #7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

This commit adds a CHECK that verifies that the file event watcher is not started twice, which would be indicative of a bug in lib/fs.js. PR-URL: #7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Remove TLSWrap::write_queue_size_, it's not used anywhere. PR-URL: #7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

The code assigned the result of EVP_get_digestbyname() to data members called md_ that were not used outside the initialization functions. PR-URL: #7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

PR-URL: #7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Pointed out by Coverity. Introduced in commit 5b8e1da from September 2011 ("Initial pass at zlib bindings".) The asynchronous version of Write() used a pointer to a stack-allocated buffer on flush. A mitigating factor is that zlib does not dereference the pointer for zero-sized writes but it's still technically UB. PR-URL: #7374 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>