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Today's Topics:
1. [mingw] #41753: -O2 Bug Infinite Loop (MinGW Notification List)
2. [mingw] #41753: -O2 Bug Infinite Loop (MinGW Notification List)
----------------------------------------------------------------------
Message: 1
Date: Sat, 13 Mar 2021 04:07:18 +0900
From: MinGW Notification List <[email protected]>
To: OSDN Ticket System <[email protected]>
Subject: [MinGW-Notify] [mingw] #41753: -O2 Bug Infinite Loop
Message-ID: <[email protected]>
Content-Type: text/plain; charset=UTF-8
#41753: -O2 Bug Infinite Loop
Open Date: 2021-03-13 04:07
Last Update: 2021-03-13 04:07
URL for this Ticket:
https://osdn.net//projects/mingw/ticket/41753
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=41753
---------------------------------------------------------------------
Last Changes/Comment on this Ticket:
2021-03-13 04:07 Updated by: first_last
* New Ticket "-O2 Bug Infinite Loop" created
---------------------------------------------------------------------
Ticket Status:
Reporter: first_last
Owner: (None)
Type: Issues
Status: Open
Priority: 9 - Highest
MileStone: Create a 64bit build environment for the MinGW.org project.
Component: GCC
Severity: 9 - Highest
Resolution: None
---------------------------------------------------------------------
Ticket details:
This Piece of Code is getting Stuck In Infinite Loop when Using -O2 Flag
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
ll f() {
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 2; j++) {
cout << i << " " << j << endl;
}
}
}
int main() {
f();
return 0;
}
--
Ticket information of MinGW - Minimalist GNU for Windows project
MinGW - Minimalist GNU for Windows Project is hosted on OSDN
Project URL: https://osdn.net/projects/mingw/
OSDN: https://osdn.net
URL for this Ticket:
https://osdn.net/projects/mingw/ticket/41753
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=41753
------------------------------
Message: 2
Date: Fri, 12 Mar 2021 22:32:58 +0000
From: MinGW Notification List <[email protected]>
To: OSDN Ticket System <[email protected]>
Subject: [MinGW-Notify] [mingw] #41753: -O2 Bug Infinite Loop
Message-ID: <[email protected]>
Content-Type: text/plain; charset=UTF-8
#41753: -O2 Bug Infinite Loop
Open Date: 2021-03-12 19:07
Last Update: 2021-03-12 22:32
URL for this Ticket:
https://osdn.net//projects/mingw/ticket/41753
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=41753
---------------------------------------------------------------------
Last Changes/Comment on this Ticket:
2021-03-12 22:32 Updated by: keith
* Status Update from Open to Closed
* Resolution Update from None to Rejected
* Milestone Update from Create a 64bit build environment for the MinGW.org
project. to (None)
* Severity Update from 9 - Highest to 1 - Lowest
* Priority Update from 9 - Highest to 1 - Lowest
* Details Updated
Comment:
Several comments:
What part of the instruction: "priority is to be assigned only by an approved
MinGW developer" do you not understand? You are not such a developer. Thus
your attempt to escalate priority guarantees that this ticket will be treated
as lowest priority.
This is not specifically a MinGW bug. Yes, I can see that it misbehaves as you
suggest, but it exhibits similar misbehaviour when I compile it as a native
GNU/Linux application, (using GCC-10.2 on Manjaro Linux). If you want it
pursued, you need to raise the issue on the GCC bug tracker.
You really should not use #include <bits/stdc++.h> directly in user code;
that's an internal-use header. In this example, you should be using #include
<iostream>.
If I compile your code, I see a warning about a missing return statement, in
your non-void f() function. Address that warning, either by adding the missing
return statement, or by declaring void f(), and the misbehaviour does not occur.
Given the above, I am not going to pursue this.
---------------------------------------------------------------------
Ticket Status:
Reporter: first_last
Owner: (None)
Type: Issues
Status: Closed
Priority: 1 - Lowest
MileStone: (None)
Component: GCC
Severity: 1 - Lowest
Resolution: Rejected
---------------------------------------------------------------------
Ticket details:
This Piece of Code is getting Stuck In Infinite Loop when Using -O2 Flag
#include <bits/stdc++.h> using namespace std; typedef long long int ll; ll
f() { for (int i = 0; i < 3; i++) { for (int j = 0; j < 2; j++) {
cout << i << " " << j << endl; } } } int main() { f(); return 0; }
--
Ticket information of MinGW - Minimalist GNU for Windows project
MinGW - Minimalist GNU for Windows Project is hosted on OSDN
Project URL: https://osdn.net/projects/mingw/
OSDN: https://osdn.net
URL for this Ticket:
https://osdn.net/projects/mingw/ticket/41753
RSS feed for this Ticket:
https://osdn.net/ticket/ticket_rss.php?group_id=3917&tid=41753
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