[Bug tree-optimization/80406] Reduced false positive test case for -Warray-bounds with -O3

[brlcad at mac dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80406

--- Comment #4 from Sean  ---
Can confirm the warning no longer appears to issue (at least as of GCC 11).

[Bug tree-optimization/80406] Reduced false positive test case for -Warray-bounds with -O3

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80406

Andrew Pinski  changed:

   What|Removed |Added

 Resolution|--- |FIXED
   Target Milestone|--- |8.0
 Status|NEW |RESOLVED

--- Comment #3 from Andrew Pinski  ---
GCC before 8, is execusively unrolling:
  for (j=i; j < npts; j++) {
k[j] = k[j+1]; /* False positive -Warray-bounds issued here */
  }

Fixed most likely by r8-5008.

[Bug tree-optimization/80406] Reduced false positive test case for -Warray-bounds with -O3

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80406

Martin Liška  changed:

   What|Removed |Added

 CC||marxin at gcc dot gnu.org

--- Comment #2 from Martin Liška  ---
GCC 4.8.0 is first revision that prints the warning/

[Bug tree-optimization/80406] Reduced false positive test case for -Warray-bounds with -O3

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80406

Richard Biener  changed:

   What|Removed |Added

   Keywords||missed-optimization
 Status|UNCONFIRMED |NEW
   Last reconfirmed||2017-04-12
  Component|middle-end  |tree-optimization
 Ever confirmed|0   |1
  Known to fail||7.0.1

--- Comment #1 from Richard Biener  ---
Confirmed.