gecko-dev/devtools
Nicholas Nethercote 34dcc7b852 Bug 1299384 - Use MOZ_MUST_USE with NS_warn_if_impl(). r=erahm.
This change avoids lots of false positives for Coverity's CHECKED_RETURN
warning, caused by NS_WARN_IF's current use in both statement-style and
expression-style.

In the case where the code within the NS_WARN_IF has side-effects, I made the
following change.

> NS_WARN_IF(NS_FAILED(FunctionWithSideEffects()));
> -->
> Unused << NS_WARN_IF(NS_FAILED(FunctionWithSideEffects()));

In the case where the code within the NS_WARN_IF lacks side-effects, I made the
following change.

> NS_WARN_IF(!condWithoutSideEffects);
> -->
> NS_WARNING_ASSERTION(condWithoutSideEffects, "msg");

This has two improvements.
- The condition is not evaluated in non-debug builds.
- The sense of the condition is inverted to the familiar "this condition should
  be true" sense used in assertions.

A common variation on the side-effect-free case is the following.

> nsresult rv = Fn();
> NS_WARN_IF_(NS_FAILED(rv));
> -->
> DebugOnly<nsresult rv> = Fn();
> NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Fn failed");

--HG--
extra : rebase_source : 58788245021096efa8372a9dc1d597a611d45611
2016-09-02 17:12:24 +10:00
..
client Merge fx-team to central, a=merge 2016-09-06 17:34:46 -07:00
docs Bug 1268591 - Make devtools icons black by default and invert them for dark theme. r=bgrins a=kwierso CLOSED TREE 2016-07-22 00:44:11 +02:00
server Bug 768072 - Implement imageSmoothingEnabled and deprecate mozImageSmoothingEnabled. r=pbro,adw,bas,bz 2016-09-01 20:49:54 -04:00
shared Bug 1299384 - Use MOZ_MUST_USE with NS_warn_if_impl(). r=erahm. 2016-09-02 17:12:24 +10:00
.eslintrc Bug 1292253 - replace some Ci uses in view-helpers and TableWidget; r=gregtatum 2016-08-09 09:43:58 -06:00
.eslintrc.mochitests Bug 1264649 - enable reject-some-requires rule for inspector; r=pbro 2016-07-21 09:04:47 -06:00
.eslintrc.xpcshell Bug 1264649 - enable reject-some-requires rule for inspector; r=pbro 2016-07-21 09:04:47 -06:00
bootstrap.js Bug 1271048 - Fix eslint issues in devtools/bootstrap.js. r=pbro 2016-05-10 00:15:03 +02:00
chrome.manifest
install.rdf
moz.build Bug 1286877 - do not set c-basic-offset for python-mode; r=gps 2016-07-14 10:16:42 -06:00
templates.mozbuild Bug 1286877 - do not set c-basic-offset for python-mode; r=gps 2016-07-14 10:16:42 -06:00