Question: Reproduce parsing errors on local machine #2286
Comments
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Hi @amai2012, you found already https://github.com/SonarOpenCommunity/sonar-cxx/wiki/Detect-and-fix-parsing-errors. The best way is normally to define some macros to fix parsing errors. You should always keep in mind, that the cxx parser is only doing a syntax analysis (you don't have to provide all includes, macros, types for a semantic analysis): Add the macros of your project to a header file and include it with https://github.com/SonarOpenCommunity/sonar-cxx/wiki/sonar.cxx.forceIncludes. Good samples for headers are here: https://github.com/SonarOpenCommunity/sonar-cxx/tree/master/cxx-sensors/src/main/resources/macros. To test things locally on your PC you can use the SSLR toolkit. Copy paste your code into the toolkit window
Hope this helps! Regards, |
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So far I have found three kind of issues:
And this one: struct Portfolio { int get() const; };
int check(const Portfolio& parObj, const int ind)
{
if (parObj.get() < 0 || parObj.get() >= ind)
{
return 0;
}
return 1;
}triggers |
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Hello @amai2012, thank you for your investigation. Could you please further narrow down the last finding. Try each test individual with the SSLR toolkit. Maybe it’s the // Test 1
struct Portfolio { int get() const; };
int check(const Portfolio& parObj, const int ind) { return 1; }
// Test 2
int check(const Portfolio& parObj, const int ind) { return 1; }
// Test 3
int check(const int ind) { return 1; }
// Test 4
int check(int ind) { return 1; }Regards, |
Tests 1-4 are passing here, the original example fails. struct Portfolio { int get() const; };
void check( Portfolio& parObj, int ind)
{
if (parObj.get() < 0 || parObj.get() >= ind)
{
return;
}
}I observe some odd behaviour with that sslr-tool here: |
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Hi @amai2012, I was able to narrow this down (see below). Problem are the brackets That has maybe something to do with Samples: void check() { // failure
a() < 0 || c >= 1;
}
void check() { // ok
a() < 0 || c > 1;
}
void check() { // ok
a < 0 || c >= 1;
}
//-------------------------------------------------
void check() { // failure
if ( a.b() < 0 || c >= 1) {}
}
void check() { // failure
if ( a() < 0 || c >= 1) {}
}
void check() { // failure
if ( a.b(1) < 0 || c >= 1 ) {}
}
void check() { // ok
if ( a() < 0 || c > 1) {}
}
void check() { // ok
if ( (a.b() < 0) || (c >= 1) ) {}
}
void check() { // ok
if ( a.b < 0 || c >= 1) {}
}
void check() { // ok
if ( a < 0 || c >= 1) {}
} |
- close SonarOpenCommunity#2286 ```C++ void check() { a() < 0 || c >= 1; } ```
- close SonarOpenCommunity#2286 ```C++ void check() { a() < 0 || c >= 1; } ```
- close SonarOpenCommunity#2286 ```C++ void check() { a() < 0 || c >= 1; } ```
- close SonarOpenCommunity#2286 ```C++ void check() { a() < 0 || c >= 1; a() < 0 || c > 1; a() < 0 || c >> 1; if(a() < 0 || c >= 1) {} if(a() < 0 || c > 1) {} if(a() < 0 || c >> 1) {} Y<X<(6<1)>>; Y<X<(6>=1)>>; Y<X<(6<=1)>>; Y<X<(6>>1)>>; Y<X<(6<<1)>>; Y<X<(6<=>1)>>; } ```
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Thanks for fixing this. |
I have a lot of parsing errors in my codebase.
https://github.com/SonarOpenCommunity/sonar-cxx/wiki/Detect-and-fix-parsing-errors has some suggestions but I lack a short hello-world project for testing.
Is it possible to reproduce the parse errors on my local machine without a full-blown analysis?
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