Zhouyi Zhou <zhouzhouyi@xxxxxxxxx> writes: > On Thu, Apr 27, 2023 at 11:09 AM Michael Ellerman <mpe@xxxxxxxxxxxxxx> wrote: >> >> Zhouyi Zhou <zhouzhouyi@xxxxxxxxx> writes: >> > On Tue, Apr 25, 2023 at 2:01 PM Zhouyi Zhou <zhouzhouyi@xxxxxxxxx> wrote: >> >> On Tue, Apr 25, 2023 at 6:07 AM Michael Ellerman <mpe@xxxxxxxxxxxxxx> wrote: >> ... >> >> > >> >> > There's 12.2.0 here: >> >> > https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/12.2.0/ >> >> > https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/ppc64le/12.2.0/ >> >> > powerpc64le-linux-gnu-gcc-12 cross compiler on my Ubuntu 22.04 does >> > not seem to have that issue as gcc-10 does >> >> OK. So so far it's only that GCC 10 that shows the problem. >> >> If you have time, you could use some of the other versions to narrow >> down which versions show the bug: >> >> https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/ppc64le/ >> >> There's an 11.0, 11.1 and 11.3 there, as well as 9.5 and so on. > GCC test results (Tested on PPC VM of Open Source Lab of Oregon State > University) > gcc 9.4 (ubuntu native): positive, show bug > gcc 9.5 (download form [1]): positive, show bug > gcc 10.1 (download from [1]): positive, show bug > gcc 10.3 (download from [1]): positive, show bug > gcc 10.4 (download from [1]): positive, show bug > > gcc 11.0 (download from [1]): negative, no bug > gcc 11.1 (download from [1]): negative, no bug > gcc 11.3 (download from [1]): negative, no bug > gcc 12.1 (download from [1]): negative, no bug > gcc 12.2 (download from [1]): negative, no bug Awesome work. How are you testing for presence/absence of the bug? By running your test and seeing if it crashes, or by looking at the generated code? cheers
