https://bugs.llvm.org/show_bug.cgi?id=33207
Bug ID: 33207
Summary: ubsan on Polly-ACC: downcast with insufficient space
for an object
Product: Polly
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Optimizer
Assignee: polly-...@googlegroups.com
Reporter: l...@meinersbur.de
CC: llvm-bugs@lists.llvm.org
With -fsanitize=undefined, one Polly-ACC test fails.
The patch https://github.com/creachadair/imath/pull/18 might need to be applied
before, otherwise ubsan errors-out on those before hitting this.
FAIL: Polly :: GPGPU/host-statement.ll (75 of 929)
******************** TEST 'Polly :: GPGPU/host-statement.ll' FAILED
********************
Script:
--
opt -polly-process-unprofitable -polly-remarks-minimal -polly-use-llvm-names
-polly-codegen-ppcg -polly-acc-dump-code -polly-invariant-load-hoisting=false
-disable-output <
/mnt/c/Users/Meinersbur/src/llvm/tools/polly/test/GPGPU/host-statement.ll |
FileCheck -check-prefix=CODE
/mnt/c/Users/Meinersbur/src/llvm/tools/polly/test/GPGPU/host-statement.ll
opt -polly-process-unprofitable -polly-remarks-minimal -polly-use-llvm-names
-polly-codegen-ppcg -polly-acc-dump-kernel-ir
-polly-invariant-load-hoisting=false -disable-output <
/mnt/c/Users/Meinersbur/src/llvm/tools/polly/test/GPGPU/host-statement.ll |
FileCheck -check-prefix=KERNEL-IR
/mnt/c/Users/Meinersbur/src/llvm/tools/polly/test/GPGPU/host-statement.ll
--
Exit Code: 2
Command Output (stderr):
--
/usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/forward_list.tcc:330:18:
runtime error: downcast of address 0x7fffd4a70490 with insufficient space for
an object of type 'std::forward_list<(anonymous
namespace)::StoreToLoadForwardingCandidate, std::allocator<(anonymous
namespace)::StoreToLoadForwardingCandidate> >::_Node' (aka
'_Fwd_list_node<(anonymous namespace)::StoreToLoadForwardingCandidate>')
0x7fffd4a70490: note: pointer points here
00 00 00 00 70 e4 12 07 00 00 00 00 b0 2e 05 07 00 00 00 00 b0 2e 05 07 00
00 00 00 d8 70 05 07
^
FileCheck error: '-' is empty.
FileCheck command line: FileCheck -check-prefix=CODE
/mnt/c/Users/Meinersbur/src/llvm/tools/polly/test/GPGPU/host-statement.ll
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