[Bug tree-optimization/90242] [UBSAN]: in vn_reference_compute_hash

[zeccav at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90242

Vittorio Zecca  changed:

   What|Removed |Added

 CC||zeccav at gmail dot com

--- Comment #3 from Vittorio Zecca  ---
On this input file I got this one and two more undefined


~/local/gcc-270309-undefined/bin/gcc c-c++-common/Warray-bounds.c -S -O
../../gcc/gcc/poly-int.h:715:21: runtime error: signed integer overflow:
9223372036854775804 + 4 cannot be represented in type 'long int'
../../gcc/gcc/poly-int.h:753:21: runtime error: signed integer overflow:
-9223372036854775807 * 8 cannot be represented in type 'long int'
../../gcc/gcc/cse.c:2215:34: runtime error: signed integer overflow: 0 -
-9223372036854775808 cannot be represented in type 'long int'

Optimization -O would do.

[Bug tree-optimization/90242] [UBSAN]: in vn_reference_compute_hash

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90242

Richard Biener  changed:

   What|Removed |Added

 CC||rguenth at gcc dot gnu.org
  Component|c   |tree-optimization

--- Comment #2 from Richard Biener  ---
signed offset vs. unsigned size, but on "invalid" input (too large object).