diff options
Diffstat (limited to 'lib/dialyzer/doc/src/dialyzer.xml')
| -rw-r--r-- | lib/dialyzer/doc/src/dialyzer.xml | 117 |
1 files changed, 102 insertions, 15 deletions
diff --git a/lib/dialyzer/doc/src/dialyzer.xml b/lib/dialyzer/doc/src/dialyzer.xml index e482b1e6f8..3fd34241b2 100644 --- a/lib/dialyzer/doc/src/dialyzer.xml +++ b/lib/dialyzer/doc/src/dialyzer.xml @@ -4,20 +4,21 @@ <erlref> <header> <copyright> - <year>2006</year><year>2014</year> + <year>2006</year><year>2015</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -70,7 +71,7 @@ [--build_plt] [--add_to_plt] [--remove_from_plt] [--check_plt] [--no_check_plt] [--plt_info] [--get_warnings] [--dump_callgraph file] [--no_native] [--fullpath] - [--statistics]</code> + [--statistics] [--no_native_cache]</code> <p>Options:</p> <taglist> <tag><c><![CDATA[files_or_dirs]]></c> (for backwards compatibility also @@ -139,7 +140,11 @@ <tag><c><![CDATA[-Wwarn]]></c></tag> <item>A family of options which selectively turn on/off warnings (for help on the names of warnings use - <c><![CDATA[dialyzer -Whelp]]></c>).</item> + <c><![CDATA[dialyzer -Whelp]]></c>). + Note that the options can also be given in the file with a + <c>-dialyzer()</c> attribute. See <seealso + marker="#suppression">Requesting or Suppressing Warnings in + Source Files</seealso> below for details.</item> <tag><c><![CDATA[--shell]]></c></tag> <item>Do not disable the Erlang shell while running the GUI.</item> <tag><c><![CDATA[--version]]></c> (or <c><![CDATA[-v]]></c>)</tag> @@ -194,6 +199,11 @@ heuristically performs when dialyzing many files; this avoids the compilation time but it may result in (much) longer analysis time.</item> + <tag><c><![CDATA[--no_native_cache]]></c></tag> + <item>By default, Dialyzer caches the results of native compilation in the + <c>$XDG_CACHE_HOME/erlang/dialyzer_hipe_cache</c> directory. + <c>XDG_CACHE_HOME</c> defaults to <c>$HOME/.cache</c>. + Use this option to disable caching.</item> <tag><c><![CDATA[--fullpath]]></c></tag> <item>Display the full path names of files for which warnings are emitted.</item> <tag><c><![CDATA[--gui]]></c></tag> @@ -227,6 +237,8 @@ <tag><c><![CDATA[-Wno_behaviours]]></c></tag> <item>Suppress warnings about behaviour callbacks which drift from the published recommended interfaces.</item> + <tag><c><![CDATA[-Wno_missing_calls]]></c></tag> + <item>Suppress warnings about calls to missing functions.</item> <tag><c><![CDATA[-Wno_undefined_callbacks]]></c></tag> <item>Suppress warnings about behaviours that have no <c>-callback</c> attributes for their callbacks.</item> @@ -242,9 +254,16 @@ analysis that finds data races performs intra-procedural data flow analysis and can sometimes explode in time. Enable it at your own risk. </item> - <tag><c><![CDATA[-Wunderspecs]]></c>***</tag> +i <tag><c><![CDATA[-Wunderspecs]]></c>***</tag> <item>Warn about underspecified functions (the -spec is strictly more allowing than the success typing).</item> + <tag><c><![CDATA[-Wunknown]]></c>***</tag> + <item>Let warnings about unknown functions and types affect the + exit status of the command line version. The default is to ignore + warnings about unknown functions and types when setting the exit + status. When using the Dialyzer from Erlang, warnings about unknown + functions and types are returned; the default is not to return + these warnings.</item> </taglist> <p>The following options are also available but their use is not recommended: (they are mostly for Dialyzer developers and internal @@ -269,6 +288,71 @@ given from the command line, so please refer to the sections above for a description of these.</p> </section> + + <section> + <marker id="suppression"></marker> + <title>Requesting or Suppressing Warnings in Source Files</title> + <p> + The <c>-dialyzer()</c> attribute can be used for turning off + warnings in a module by specifying functions or warning options. + For example, to turn off all warnings for the function + <c>f/0</c>, include the following line: + </p> +<code type="none"> +-dialyzer({nowarn_function, f/0}). +</code> + <p>To turn off warnings for improper lists, add the following line + to the source file: + </p> +<code type="none"> +-dialyzer(no_improper_lists). +</code> + <p>The <c>-dialyzer()</c> attribute is allowed after function + declarations. Lists of warning options or functions are allowed: + </p> +<code type="none"> +-dialyzer([{nowarn_function, [f/0]}, no_improper_lists]). +</code> + <p> + Warning options can be restricted to functions: + </p> +<code type="none"> +-dialyzer({no_improper_lists, g/0}). +</code> +<code type="none"> +-dialyzer({[no_return, no_match], [g/0, h/0]}). +</code> + <p> + For help on the warning options use <c>dialyzer -Whelp</c>. The + options are also enumerated <seealso + marker="#gui/1">below</seealso> (<c>WarnOpts</c>). + </p> + <note> + <p> + The <c>-dialyzer()</c> attribute is not checked by the Erlang + Compiler, but by the Dialyzer itself. + </p> + </note> + <note> + <p> + The warning option <c>-Wrace_conditions</c> has no effect when + set in source files. + </p> + </note> + <p> + The <c>-dialyzer()</c> attribute can also be used for turning on + warnings. For instance, if a module has been fixed regarding + unmatched returns, adding the line + </p> +<code type="none"> +-dialyzer(unmatched_returns). +</code> + <p> + can help in assuring that no new unmatched return warnings are + introduced. + </p> + </section> + <funcs> <func> <name>gui() -> ok | {error, Msg}</name> @@ -283,13 +367,14 @@ OptList :: [Option] Option :: {files, [Filename :: string()]} | {files_rec, [DirName :: string()]} - | {defines, [{Macro: atom(), Value : term()}]} + | {defines, [{Macro :: atom(), Value :: term()}]} | {from, src_code | byte_code} %% Defaults to byte_code | {init_plt, FileName :: string()} %% If changed from default | {plts, [FileName :: string()]} %% If changed from default | {include_dirs, [DirName :: string()]} | {output_file, FileName :: string()} | {output_plt, FileName :: string()} + | {check_plt, boolean()}, | {analysis_type, 'succ_typings' | 'plt_add' | 'plt_build' | @@ -313,7 +398,8 @@ WarnOpts :: no_return | race_conditions | overspecs | underspecs - | specdiffs</code> + | specdiffs + | unknown</code> </desc> </func> <func> @@ -347,6 +433,7 @@ Tag :: 'warn_behaviour' | 'warn_return_only_exit' | 'warn_umatched_return' | 'warn_undefined_callbacks' + | 'warn_unknown' Id = {File :: string(), Line :: integer()} Msg = msg() -- Undefined</code> </desc> |