Date: Sat, 10 Jun 2017 21:05:01 -0300 From: Friedrich Locke <friedrich.locke@gmail.com> To: Serpent7776 <serpent7776@gmail.com>, freebsd-questions@freebsd.org Subject: Re: -O2 flag Message-ID: <593C892D.4070200@gmail.com> In-Reply-To: <20170610230928.581e3cf9@DaemONX> References: <593C4679.5010104@gmail.com> <20170610230928.581e3cf9@DaemONX>
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Here you have it: gustav# cc --version FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on LLVM 3.8.0) Target: x86_64-unknown-freebsd11.0 Thread model: posix InstalledDir: /usr/bin gustav# Em 10/06/2017 18:09, Serpent7776 escreveu: > On Sat, 10 Jun 2017 16:20:25 -0300 > Friedrich Locke <friedrich.locke@gmail.com> wrote: > >> Hi folks, >> >> i am trying compile a program with cc on freebsd 11. >> When i use -O2 compilation flag, the compiled code is giving error on >> execution, but with i omit -O2 everything works ok. >> >> Have anybody already faced such problem ? > Yes, a few times in the past. Your code may have hidden bug which is triggered > only with optimizations enabled. It might be relying on some kind of undefined > behaviour. > Unfortunately, I don't have any helpful advices on how to find this error - > try enabling all compiler warnings flags. > I'd suspect a bug in your code rather than a bug in compiler, but the latter is > not impossible. > >> Thanks in advance. >> _______________________________________________ >> freebsd-questions@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > >
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