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Posted to issues@trafficserver.apache.org by "Igor Galić (JIRA)" <ji...@apache.org> on 2012/07/16 21:33:35 UTC
[jira] [Updated] (TS-1345) fix signed/unsigned compilation issues
in Vec
[ https://issues.apache.org/jira/browse/TS-1345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Igor Galić updated TS-1345:
---------------------------
Backport to Version: 3.2.1
> fix signed/unsigned compilation issues in Vec
> ---------------------------------------------
>
> Key: TS-1345
> URL: https://issues.apache.org/jira/browse/TS-1345
> Project: Traffic Server
> Issue Type: Improvement
> Components: Cleanup, Core
> Affects Versions: 3.3.0
> Reporter: James Peach
> Assignee: James Peach
> Fix For: 3.3.0
>
>
> cc1plus: warnings being treated as errors
> Vec.h: In function ‘int main(int, char**)’:
> Vec.h:616: error: assuming signed overflow does not occur when assuming that (X + c) < X is always false
> Vec.h:616: error: assuming signed overflow does not occur when assuming that (X + c) < X is always false
> Alan says:
> It is a result of optimization in the call sequence in test_append that calls str.append(value,len) which calls reserve(length() + count). length() is inlined to a reference to n so the argument is treated as "n+count". This yields, in the reserve method at the bad line
> if (n+count <= n)
> which leads to the warning/error you see. I don't see how to disable the error, though.
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