Re: [Clr-dev] Weird compiler errors with -O0 -fopenmp and Eigen

Hi Markus Thanks again for the report of the bug, I was able to reproduce and confirm it I also found the patch that is generating the bug. I still need to do more tests, as soon as we have a release with the bug fixed and tested I will let you know Regards Victor Rodriguez On Sat, Dec 2, 2017 at 3:42 PM, Markus Ebner <markus-ebner(a)web.de&gt; wrote: > > I am using version 19420, and here is a full log containing the compiler errors: > > https://pastebin.com/PESHASJX > > > > Thanks! > > > > On Samstag, 2. Dezember 2017 22:25:40 CET Victor Rodriguez wrote: > > > Thanks for the report > > > > > > What version of clear linux are you using? > > > > > > Do you have a full log? > > > > > > Regards > > > > > > On Dec 2, 2017 12:34 PM, "Markus Ebner" <markus-ebner(a)web.de&gt; wrote: > > > > > > > Hi, > > > > > > > > I am experiencing a weird problem, while developping C++ on clearlinux > > > > with gcc and Eigen. > > > > The following code-snippet: > > > > > > > > #include <eigen3/Eigen/Dense> > > > > > > > > template<typename TInputBlock, typename TOutputBlock> > > > > static void encode(const TInputBlock& input, TOutputBlock& output) { > > > > Eigen::MatrixXf mul0(8, 8); > > > > Eigen::MatrixXf mul1(8, 8); > > > > output = (mul0 * input * mul1); > > > > } > > > > > > > > int main() { > > > > Eigen::MatrixXf input(8, 8); > > > > Eigen::MatrixXf output(8, 8); > > > > encode(input, output); > > > > } > > > > > > > > compiles fine with the following gcc-invocation on Gentoo and OpenSUSE > > > > (using GCC-7.2.0 and GCC-7.2.1 respectively): > > > > g++ -g -O0 -fopenmp ./main.cpp > > > > However, using this invocation on clearlinux spouts a bunch of weird > > > > errors I can't track down, from one of the SIMD intrinsics headers. > > > > This error is specific to this special combination of gcc-arguments: "-O0 > > > > -fopenmp". Removing either one of them results in a successfull compilation. > > > > Another way to get it to build on clearlinux, is by adding "-ftree-fre" to > > > > the gcc-invocation. > > > > > > > > I tried the current master of Eigen, as well as the version that comes > > > > with clearlinux. > > > > Might this come from clearlinux-specific changes to the gcc codebase? > > > > > > > > Thanks! > > > > _______________________________________________ > > > > Dev mailing list > > > > Dev(a)lists.clearlinux.org > > > > https://lists.clearlinux.org/mailman/listinfo/dev > > > > > > > > > > >