bf5c71bdca
* build: remove -Wabi and add -Wundef
gcc >= 8 throws a warning about -Wabi (without a specific ABI version)
being ignored, while -Wundef seems more useful (as shown by the change
in config.h, which was probably an unfortunate typo)
travis.yaml should probably be updated soon, but was left out from this
change as the current images don't yet need it
* lib: unused function in valueflow
refactored out since
|
||
---|---|---|
.. | ||
test | ||
triage | ||
ci.py | ||
clang-ast.cpp | ||
compare-ast-clang-and-cppcheck.py | ||
compare.cs | ||
daca-test-patch.sh | ||
daca2-download.py | ||
daca2-getpackages.py | ||
daca2-logs2git.sh | ||
daca2-report.py | ||
dmake.cpp | ||
dmake.sln | ||
dmake.vcxproj | ||
donate-cpu-server.py | ||
donate-cpu.py | ||
extract_and_run_more_tests.sh | ||
extracttests.py | ||
generate_and_run_more_tests.sh | ||
generate_cfg_tests.cpp | ||
git-pre-commit-cppcheck | ||
listErrorsWithoutCWE.py | ||
matchcompiler.py | ||
parse-glibc.py | ||
pr.py | ||
readme.md | ||
reduce.py | ||
run-coverity.sh | ||
run_more_tests.sh | ||
test_matchcompiler.py | ||
test_showtimetop5.sh | ||
testrunnerify_code.sh | ||
times-tags.sh | ||
times-vs.py | ||
times.c | ||
times.sh | ||
trac-keywords.py |
readme.md
Cppcheck developer and build tools
* tools/matchcompiler.py
The matchcompiler.py is a build script that performs a few code transformations to .cpp files under the lib directory. These transformations are related to the use of Token::Match()
function and are intended to improve code performance. The transformed files are saved on the build directory. This tool is silently used when building the code with SRCDIR=build
, that is:
$ cd path/to/cppcheck
$ make SRCDIR=build
Here is a simple example of the matchcompiler.py optimization. Suppose there is a file example.cpp under lib/:
// lib/example.cpp
void f1() {
Token::Match(tok, "abc");
}
void f2() {
const char *abc = "abc";
Token::Match(tok, abc);
}
If you manually run matchcompiler.py from the main directory:
$ cd path/to/cppcheck
$ python tools/matchcompiler.py
A file example.cpp will be generated on the build directory:
// build/example.cpp
#include "token.h"
#include "errorlogger.h"
#include <string>
#include <cstring>
static const std::string matchStr1("abc");
// pattern: abc
static bool match1(const Token* tok) {
if (!tok || !(tok->str()==matchStr1)/* abc */)
return false;
return true;
}
void f1() {
match1(tok);
}
void f2() {
const char *abc = "abc";
Token::Match(tok, abc);
}
From this we can see that the usage of Token::Match()
in f1()
has been optimized, whereas the one in f2()
couldn't be optimized (the string wasn't inline on the Token::Match()
call). The developer doesn't need to use this tool during development but should be aware of these optimizations. Building with this optimization, cppcheck can get a boost of 2x of speed-up.
* tools/dmake.cpp
Automatically generates the main Makefile
for Cppcheck (the main Makefile
should not be modified manually). To build and run the dmake
tool execute:
$ cd path/to/cppcheck
$ make dmake
$ ./dmake
* tools/reduce.py
Script that reduces code for a hang/false positive.
* tools/times.sh
Script to generate a times.log
file that contains timing information of the last 20 revisions.