[Bug tree-optimization/100201] New: Signed integer overflow in poly-int.h

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100201

            Bug ID: 100201
           Summary: Signed integer overflow in poly-int.h
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: acoplan at gcc dot gnu.org
  Target Milestone: ---

Bootstrapping --with-build-config=bootstrap-ubsan on AArch64 shows:

gcc/xgcc -B gcc
/home/alecop01/toolchain/src/gcc/gcc/testsuite/gcc.c-torture/execute/pr79286.c
-c -O3
/home/alecop01/toolchain/src/gcc/gcc/poly-int.h:1095:5: runtime error: signed
integer overflow: -8846744073709551616 * 8 cannot be represented in type 'long
int'