static analysis of C/C++ code
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rebnridgway 0d7836f3a0 Calculate token scopes in advance rather than as the tokenlist is iterated (#1882)
* Added scopeinfo member to token class

Moved ScopeInfo2 declaration here as well because that's where it needs to be now.

* Added scopeinfo accessors and declaration to class

* Add new method for calculating scopes

This replaces the methods in the TemplateSimplifier which calculate the current scope as the token list is iterated.  The old method required checking if the scope had changed for every token multiple times (for multiple iterations), which was surprisingly costly.  Calculating scopes in advance like this decreases runtime on a worst-case file by around thirty percent.
ScopeInfo objects are disposed of when the TemplateSimplification is done as they are not used later.

* Add calculateScopes method to header

* Removed code that calculated current scope

This has been replaced by code that calculates the scopes up front and stores them with each token, which is much faster.

* Fixed compile errors from extra parentheses

* Added missing code to fix memory leak

* Added code to actually clean up ScopeInfo structs

* Tidy up a dodgy for loop

* Convert argument to const ref

* Calculate missing scopes

As the templatesimplificator expands templates and does multiple passes it needs to make sure all scopes are calculated.

* Remove copying the scope to the next token

This is now done properly when scopes are calculated.

* Remove call to calculateScopes

This is now done by the TemplateSimplifier.

* Recalculate scopes for every pass of simplifyTemplates

* Add code to calculate extra scopes as they are added

I thought that this might be useful for calculating scopes when Tokens are created, but as there are several ways of creating Tokens that don't guarantee that they are placed in a list it is easier to just calculate scopes when you know you have a list and when you know you're adding to a list.

* Fix several bugs and poorly designed code

Remove the global scopes collection, and clean them up instead by iterating through the tokenlist to find them.  This means scopes can be calculated by functions in the Token class as well as in the Tokenizer class without leaking the scope object.
Fix a couple of bugs in the calculateScopes method and make it more efficient.

* Remove unnecessary calls to calculateScopes

* Move brace to correct position

Calculating scopes during insertToken only needs to happen if we created a new Token.

* Handle 'using namespace' declarations separately

This fixes a bug caused by a statement matching 'struct B < 0 > ;'

* Fix argument name mismatch

* Actually use newScopeInfo when inserting Token

* Switch to using shared_ptr to hold scopeInfos

This means ScopeInfo2 objects get properly cleaned up when they are no longer needed.

* Change ScopeInfo member to be a shared_ptr

* Update code to use shared_ptr

* Add missing include for shared_ptr

* Remove unnecessary cleanup code

This has been replaced by shared_ptr for ScopeInfo2 objects
2019-06-29 14:34:22 +02:00
Cppcheck.xcodeproj Fix xcode project file 2015-11-23 23:00:21 +03:00
addons Addons scripts: Remove redundant code/characters, fix indentation. (#1926) 2019-06-27 06:59:47 +02:00
cfg windows.cfg: SetClipboardData takes the data so the configuration should not say <leak-ignore>/ (https://docs.microsoft.com/en-us/windows/desktop/api/winuser/nf-winuser-setclipboarddata) 2019-06-28 17:30:05 +02:00
cli Set version 1.88 2019-06-29 08:38:13 +02:00
cmake Set version 1.88 2019-06-29 08:38:13 +02:00
cve-test-suite cve test suite: Add a download script 2018-10-06 11:36:54 +02:00
democlient democlient: Fixed override 2019-02-09 13:31:50 +01:00
externals bump simplecpp 2019-05-07 19:15:31 +02:00
gui lupdate and lrelease 2019-06-29 09:50:53 +02:00
htmlreport Update cppcheck-htmlreport (#1858) 2019-05-30 10:37:52 +02:00
lib Calculate token scopes in advance rather than as the tokenlist is iterated (#1882) 2019-06-29 14:34:22 +02:00
man Set version 1.88 2019-06-29 08:38:13 +02:00
oss-fuzz Update include path 2019-06-24 20:53:19 +02:00
platforms #8424 Supply platform files for each platform instead of generic ones. Supply platform file for AIX ppc64 2019-01-01 16:04:02 +01:00
rules Fix a typo in a message for a rule (#1181) 2018-04-19 22:33:14 +02:00
samples Restore severity for 'autoVariables' 2019-03-15 15:13:11 +01:00
snap Fix permissions of certain non-executable files (#1083) 2018-02-09 19:46:38 +01:00
test Valueflow: support global static const variables (#1861) 2019-06-29 14:33:55 +02:00
tools daca@home: use Cppcheck-1.88 as base version 2019-06-29 11:01:42 +02:00
win_installer cppcheck.wxs: Install more --library configuration files 2019-06-29 09:51:25 +02:00
.astylerc Move astyle options to a separate file. That way keeping it in sync b… (#1468) 2018-11-09 09:55:34 +01:00
.codacy.yml Codacy: Try to exclude all addon test files 2018-10-18 09:29:38 +02:00
.gitignore Feature/ros naming check (#1511) 2019-01-09 18:16:51 +01:00
.mailmap Revert "Revert "Add a .mailmap file."" 2013-10-04 18:03:18 +02:00
.travis.yml Makefile: Add one more flag 'MATCHCOMPILER=yes' 2019-06-23 13:43:09 +02:00
.travis_llvmcheck_suppressions Travis: updated the .travis_llvmcheck_suppressions file, * is not allowed 2018-11-19 15:42:40 +01:00
.travis_suppressions Travis: Add suppression 2019-06-15 20:56:39 +02:00
AUTHORS Update AUTHORS 2019-06-29 08:34:21 +02:00
CMakeLists.txt minor improvements (#1929) 2019-06-28 06:57:05 +02:00
COPYING Licensing: Using the GPL 3 license 2008-10-26 07:55:15 +00:00
Makefile Restore Makefile after release 2019-06-29 10:22:35 +02:00
appveyor.yml MSVC 15-x64-Release build often fails due to unknown reasons. It got disabled now. 2019-01-10 08:30:35 +01:00
benchmarks.txt benchmarks: Added CImg. Removed old stuff. 2019-03-04 07:05:40 +01:00
build-pcre.txt Updated/Improved several readme files 2015-11-06 15:19:08 +01:00
build.bat batch files: switch to the batch file directory before doing anything else so that relative paths work right even if the batch file isn't called from its directory 2012-09-29 17:32:04 +02:00
console_common.pri pro and pri files: remove unneeded empty lines, use spaces for consistency 2012-10-12 17:46:57 +02:00
cppcheck-errors.rng runastyle also formats cppcheck-errors.rng using xmllint 2018-11-05 21:15:35 +01:00
cppcheck.cbp Removed ExecutionPath 2015-07-23 19:01:12 +02:00
cppcheck.cppcheck Add cppcheck.cppcheck build dir 2018-02-23 22:16:49 +01:00
cppcheck.sln Updated Visual Studio solution to VS2017. 2017-05-14 10:04:25 +02:00
createrelease Update createrelease 2019-06-29 10:49:59 +02:00
doxyfile Fix typos (#1568) 2019-01-06 17:15:57 +01:00
generate_coverage_report Adjust options for lcov/genhtml to unmangled symbols and HTML frames 2016-02-02 12:23:33 +01:00
philosophy.md Added a philosophy.md document. 2018-09-06 20:14:55 +02:00
readme.md minor improvements (#1929) 2019-06-28 06:57:05 +02:00
readme.txt minor improvements (#1929) 2019-06-28 06:57:05 +02:00
readmeja.md sync (#1835) 2019-05-17 09:31:41 +02:00
requirements.txt Add pcre requirement (#1638) 2019-02-01 07:05:49 +01:00
runastyle oss-fuzz: max size of input data to analyze 10000 2019-03-30 11:40:30 +01:00
runastyle.bat Move astyle options to a separate file. That way keeping it in sync b… (#1468) 2018-11-09 09:55:34 +01:00
webreport.sh webreport: skip simian 2017-12-26 12:04:42 +01:00

readme.md

Cppcheck

Linux Build Status Windows Build Status Coverity Scan Build Status
Linux Build Status Windows Build Status Coverity Scan Build Status

About the name

The original name of this program was "C++check", but it was later changed to "Cppcheck".

Despite the name, Cppcheck is designed for both C and C++.

Manual

A manual is available online.

Compiling

Any C++11 compiler should work. For compilers with partial C++11 support it may work. If your compiler has the C++11 features that are available in Visual Studio 2013 / GCC 4.6 then it will work.

To build the GUI, you need Qt.

When building the command line tool, PCRE is optional. It is used if you build with rules.

There are multiple compilation choices:

  • qmake - cross platform build tool
  • cmake - cross platform build tool
  • Windows: Visual Studio (VS 2013 and above)
  • Windows: Qt Creator + mingw
  • gnu make
  • g++ 4.6 (or later)
  • clang++

cmake

Example, compiling Cppcheck with cmake:

mkdir build
cd build
cmake ..
cmake --build .

If you want to compile the GUI you can use the flag -DBUILD_GUI=ON

For rules support (requires pcre) use the flag -DHAVE_RULES=ON

For release builds it is recommended that you use: -DUSE_MATCHCOMPILER=ON

qmake

You can use the gui/gui.pro file to build the GUI.

cd gui
qmake
make

Visual Studio

Use the cppcheck.sln file. The file is configured for Visual Studio 2015, but the platform toolset can be changed easily to older or newer versions. The solution contains platform targets for both x86 and x64.

To compile with rules, select "Release-PCRE" or "Debug-PCRE" configuration. pcre.lib (pcre64.lib for x64 builds) and pcre.h are expected to be in /externals then.

Qt Creator + MinGW

The PCRE dll is needed to build the CLI. It can be downloaded here: http://software-download.name/pcre-library-windows/

GNU make

Simple, unoptimized build (no dependencies):

make

The recommended release build is:

make MATCHCOMPILER=yes CFGDIR=cfg HAVE_RULES=yes CXXFLAGS="-O2 -DNDEBUG -Wall -Wno-sign-compare -Wno-unused-function"

Flags:

  1. MATCHCOMPILER=yes Python is used to optimise cppcheck. The Token::Match patterns are converted into C++ code at compile time.

  2. CFGDIR=cfg Specify folder where .cfg files are found

  3. HAVE_RULES=yes Enable rules (PCRE is required if this is used)

  4. CXXFLAGS="-O2 -DNDEBUG -Wall -Wno-sign-compare -Wno-unused-function" Enables most compiler optimizations, disables cppcheck-internal debugging code and enables basic compiler warnings.

g++ (for experts)

If you just want to build Cppcheck without dependencies then you can use this command:

g++ -o cppcheck -std=c++11 -Iexternals -Iexternals/simplecpp -Iexternals/tinyxml -Ilib cli/*.cpp lib/*.cpp externals/simplecpp/simplecpp.cpp externals/tinyxml/*.cpp

If you want to use --rule and --rule-file then dependencies are needed:

g++ -o cppcheck -std=c++11 -lpcre -DHAVE_RULES -Ilib -Iexternals -Iexternals/simplecpp -Iexternals/tinyxml cli/*.cpp lib/*.cpp externals/simplecpp/simplecpp.cpp externals/tinyxml/*.cpp

MinGW

mingw32-make LDFLAGS=-lshlwapi

Other Compiler/IDE

  1. Create an empty project file / makefile.
  2. Add all cpp files in the cppcheck cli and lib folders to the project file / makefile.
  3. Add all cpp files in the externals folders to the project file / makefile.
  4. Compile.

Cross compiling Win32 (CLI) version of Cppcheck in Linux

sudo apt-get install mingw32
make CXX=i586-mingw32msvc-g++ LDFLAGS="-lshlwapi" RDYNAMIC=""
mv cppcheck cppcheck.exe

Webpage

http://cppcheck.sourceforge.net/