Christophe, Rainer, Rainer Orth <r...@cebitec.uni-bielefeld.de> writes:
> Hi Christophe, > >> On Fri, 17 May 2019 at 10:12, Vladislav Ivanishin <v...@ispras.ru> wrote: >>> >> As you have probably noticed already, the new test uninit-28.c fails: >> /gcc/testsuite/gcc.dg/uninit-28-gimple.c:9:16: warning: 'undef' may be >> used uninitialized in this function [-Wmaybe-uninitialized] >> FAIL: gcc.dg/uninit-28-gimple.c (test for bogus messages, line 9) >> at least on arm & aarch64 Thanks for spotting. I managed to reproduce the failure on x86_64 (I started from revision and configure options in one of H.J.'s test results [1]) and it seems, another check-in is to blame. The stage1 compiler is always fine w.r.t. the result on uninit-28-gimple.c. The stage2 compiler seems to be miscompiled. r271460 is already bad, yes, but the problem starts earlier (better to pick another test as an indicator, or bisect just the stage1 compiler, compiling pseudo-stage2 with it from newer sources). I'm going to bisect the regression and report to the appropriate thread unless someone beats me to it. [1]: https://gcc.gnu.org/ml/gcc-testresults/2019-05/msg02436.html > I'm seeing it on sparc-sun-solaris2.11, and there are gcc-testresults > reports for i?86, mips64el, powerpc*, s390x, and x86_64. > > Rainer -- Vlad
