Add an option to deal with warning of gcc

[llx07]

This will solve issue #214, #274.

If the exit code of the compiler is 0, and the STDERR is not empty, then we will consider the output of the STDERR is warning message, and the compilation will not be halted, the console will still be displayed with the message "Warnings while compiling".

The function will only be enabled if the new option "Zero Exit Code Is Warning" is enabled in the setting.

[llx07]

Here's an example of how this PR will work.

For example, we run the code below with compiler argument -Wall.

#include<bits/stdc++.h>
using namespace std;

int read(){
    int f=1,x=0;char c=getchar();
    while(!isdigit(c)){if(c=='-')f=-1;c=getchar();}
    while(isdigit(c)){x=x*10+c-'0';c=getchar();}
    return x*f;
}

int main(){
    int n=read();
    string s;
    cin>>s;
    for(auto c:s){
        cout<<(char)(c-'a'+'A');
    }
    return 0;
}

Before:

The compilation will be halted, but as a cp contestant, what we want is to read the warning while testing the testcase.

Now:

Now it can successfully display the warning and test the testcases at the same time.

[llx07]

P.S.
The condition in the if-statement in src/compiler.ts might seem a little complicated, this is because I want cph work exactly the same as before (If the new option is not enabled).

I'm wondering if it is possible to judge whether the compilation is success only by the exitcode. I don't use other language besides C++, but in my test, it's ok to do this in g++.

i.e. Can the code be rewritten to the following?

        compiler.on('exit', (exitcode) => {
-            if (exitcode === 1 || error !== '') {
+            if (exitcode === 1) {  
                ocWrite('Errors while compiling:\n' + error);
                ocShow();
                console.error('Compilation failed');
                resolve(false);
                getJudgeViewProvider().extensionToJudgeViewMessage({
                    command: 'compiling-stop',
                });
                getJudgeViewProvider().extensionToJudgeViewMessage({
                    command: 'not-running',
                });
                return;
            }
+            if (error !== '') {
+                ocWrite('Warnings while compiling:\n' + error);
+                ocShow();
+            }
            console.log('Compilation passed');
            getJudgeViewProvider().extensionToJudgeViewMessage({
                command: 'compiling-stop',
            });
            resolve(true);
            return;
        });
    });
    return result;
};

[hieupham1103]

I have added -Wall to compiler argument but it still exists
My code here

#include<bits/stdc++.h>
#define ii pair <int,int>
#define fi first
#define se second
#define int long long
#define double long double
#define endl '\n'
#define all(x) x.begin(), x.end()
using namespace std;

const int maxN = 2e5 + 10;

int a[maxN];
unordered_map <int,int> cnt[12];

signed main(){
    //freopen("input.INP", "r", stdin);
    //freopen("output.OUT", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int n, k;
    cin >> n >> k;
    for (int i = 1; i <= n; i++){
        cin >> a[i];
        cnt[(int)log10(a[i]) + 1][a[i] % k]++;
        // cout << (int)log10(a[i]) + 1 << ' ' << a[i] % k << endl;
    }
    int res = 0;
    for (int i = 1; i <= n; i++){
        // cout << "*" << i << endl;
        for (int l = 1, t = 10; l <= 10; l++){
            int rem = (k - (a[i] * t) % k + k) % k;
            int te = cnt[l][rem];
            if (l == (int)log10(a[i]) + 1 and a[i] % k == rem){
                te -= 1;
            }
            // cout << a[i] * t << ' ' << (a[i] * t) % k  << ' ' << rem << endl;
            // cout << l << ' ' << te << endl;
            res += te;
            t *= 10;
            t %= k;
        }
        // cout << endl;
    }

    cout << res << endl;
    return 0;
}
/*
1000000000
10000000000
*/

[tesla59]

STDERR is not empty

Can u please explain your scenario?

[tesla59]

P.S. The condition in the if-statement in src/compiler.ts might seem a little complicated, this is because I want cph work exactly the same as before (If the new option is not enabled).

I'm wondering if it is possible to judge whether the compilation is success only by the exitcode. I don't use other language besides C++, but in my test, it's ok to do this in g++.

i.e. Can the code be rewritten to the following?

        compiler.on('exit', (exitcode) => {
-            if (exitcode === 1 || error !== '') {
+            if (exitcode === 1) {  
                ocWrite('Errors while compiling:\n' + error);
                ocShow();
                console.error('Compilation failed');
                resolve(false);
                getJudgeViewProvider().extensionToJudgeViewMessage({
                    command: 'compiling-stop',
                });
                getJudgeViewProvider().extensionToJudgeViewMessage({
                    command: 'not-running',
                });
                return;
            }
+            if (error !== '') {
+                ocWrite('Warnings while compiling:\n' + error);
+                ocShow();
+            }
            console.log('Compilation passed');
            getJudgeViewProvider().extensionToJudgeViewMessage({
                command: 'compiling-stop',
            });
            resolve(true);
            return;
        });
    });
    return result;
};

i think we should keep checking the error and the exit code

[llx07]

STDERR is not empty

Can u please explain your scenario?

The scenario is explained in the previous comment.

When you enable -Wall in g++, then compiler may give warning(s) in STDERR, but the compliation is still success, and the exitcode is 0.

[tesla59]

STDERR is not empty

Can u please explain your scenario?

The scenario is explained in the previous comment.

When you enable -Wall in g++, then compiler may give warning(s) in STDERR, but the compliation is still success, and the exitcode is 0.

Hi @linlexiao0 . sorry i wrongly tagged u. I meant to mention @hieupham1103 on their scenario

[KLYleo]

how to add this to my cph in vscode

[llx07]

how to add this to my cph in vscode

@KLYleo
The feature haven't been published yet, but you can use my prerelease here.

[KLYleo]

how to add this to my cph in vscode

@KLYleo 该功能尚未发布，但您可以在此处使用我的预发布。

ok thx