[r11-6232 Regression] FAIL: gcc.dg/pr97750.c (test for warnings, line 17) on Linux/x86_64

[Andrew MacLeod]

On 12/17/20 1:37 PM, sunil.k.pandey wrote:
> On Linux/x86_64,
>
> c25b504636fec7bf8f181a84af83a52757ba7e89 is the first bad commit
> commit c25b504636fec7bf8f181a84af83a52757ba7e89
> Author: Andrew MacLeod <amacleod@redhat.com>
> Date:   Thu Dec 17 09:24:11 2020 -0500
>
>      Fix trap in pointer conversion in op1_range.
>
> caused
>
> FAIL: gcc.dg/pr97750.c (test for excess errors)
> FAIL: gcc.dg/pr97750.c  (test for warnings, line 17)
>
> with GCC configured with
>
> ../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-6232/usr --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl --enable-libmpx x86_64-linux --disable-bootstrap
>
> To reproduce:
>
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/pr97750.c --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/pr97750.c --target_board='unix{-m32\ -march=cascadelake}'"
>
> (Please do not reply to this email, for question about this report, contact me at skpgkp2 at gmail dot com)
>

For some reason this configuration produces the warning at a different 
line number.

Fixed by not checking for the warning.. we really just want to make sure 
this compiles to fix the PR.

Pushed.

Andrew

-------------- next part --------------
commit 0e9f2b2dc8df91be27acc383c63f0feae28fa229
Author: Andrew MacLeod <amacleod@redhat.com>
Date:   Fri Dec 18 17:05:18 2020 -0500

    Re: [r11-6232 Regression] FAIL: gcc.dg/pr97750.c
    
    Adjust testcase to not actually check for an undefined warning since we
    don't really care about it, or what line it is issued on.
    
            gcc/testsuite/
            * gcc.dg/pr97750.c: Remove check for warning.

diff --git a/gcc/testsuite/gcc.dg/pr97750.c b/gcc/testsuite/gcc.dg/pr97750.c
index 822b53abcff..90c3dc26852 100644
--- a/gcc/testsuite/gcc.dg/pr97750.c
+++ b/gcc/testsuite/gcc.dg/pr97750.c
@@ -14,8 +14,8 @@ void CopyFromUswc(long src_pitch) {
   for (; CopyFromUswc_height;) {
     unsigned unaligned = (long)CopyFromUswc_src;
     if (unaligned)
-      CopyPlane(&dst[unaligned]);  /* { dg-warning "may be used uninitialized" } */
+      CopyPlane(&dst[unaligned]);  
     CopyFromUswc_src += src_pitch;
   }
 }
-
+/* { dg-prune-output "-Wmaybe-uninitialized" } */