* [Bug middle-end/68785] [6 Regression] valgrind reports issues with folding on x86_64
[not found] <bug-68785-4@http.gcc.gnu.org/bugzilla/>
@ 2020-03-15 20:14 ` dcb314 at hotmail dot com
2020-03-16 7:43 ` rguenth at gcc dot gnu.org
2020-03-16 8:10 ` dcb314 at hotmail dot com
2 siblings, 0 replies; 3+ messages in thread
From: dcb314 at hotmail dot com @ 2020-03-15 20:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68785
David Binderman <dcb314 at hotmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dcb314 at hotmail dot com
--- Comment #14 from David Binderman <dcb314 at hotmail dot com> ---
Interestingly, I ran the code in comment 8 through a valgrind version
of recent gcc trunk, with the compiler flag -O2, and got this:
./gcc.dg/pr68785.c
==49861== Invalid read of size 1
==49861== at 0xD9CDDD: count_nonzero_bytes(tree_node*, unsigned long,
unsigned long, unsigned int*, bool*, bool*, bool*, vr_values const*,
ssa_name_limit_t&) (tree-ssa-strlen.c:4891)
==49861== by 0xD9CF17: count_nonzero_bytes(tree_node*, unsigned long,
unsigned long, unsigned int*, bool*, bool*, bool*, vr_values const*,
ssa_name_limit_t&) (tree-ssa-strlen.c:4801)
==49861== by 0xDA19EE: count_nonzero_bytes (tree-ssa-strlen.c:4920)
==49861== by 0xDA19EE: handle_integral_assign(gimple_stmt_iterator*, bool*,
vr_values const*) (tree-ssa-strlen.c:5547)
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug middle-end/68785] [6 Regression] valgrind reports issues with folding on x86_64
[not found] <bug-68785-4@http.gcc.gnu.org/bugzilla/>
2020-03-15 20:14 ` [Bug middle-end/68785] [6 Regression] valgrind reports issues with folding on x86_64 dcb314 at hotmail dot com
@ 2020-03-16 7:43 ` rguenth at gcc dot gnu.org
2020-03-16 8:10 ` dcb314 at hotmail dot com
2 siblings, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-03-16 7:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68785
--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to David Binderman from comment #14)
> Interestingly, I ran the code in comment 8 through a valgrind version
> of recent gcc trunk, with the compiler flag -O2, and got this:
>
> ./gcc.dg/pr68785.c
> ==49861== Invalid read of size 1
> ==49861== at 0xD9CDDD: count_nonzero_bytes(tree_node*, unsigned long,
> unsigned long, unsigned int*, bool*, bool*, bool*, vr_values const*,
> ssa_name_limit_t&) (tree-ssa-strlen.c:4891)
> ==49861== by 0xD9CF17: count_nonzero_bytes(tree_node*, unsigned long,
> unsigned long, unsigned int*, bool*, bool*, bool*, vr_values const*,
> ssa_name_limit_t&) (tree-ssa-strlen.c:4801)
> ==49861== by 0xDA19EE: count_nonzero_bytes (tree-ssa-strlen.c:4920)
> ==49861== by 0xDA19EE: handle_integral_assign(gimple_stmt_iterator*,
> bool*, vr_values const*) (tree-ssa-strlen.c:5547)
Can you file a new bug please?
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug middle-end/68785] [6 Regression] valgrind reports issues with folding on x86_64
[not found] <bug-68785-4@http.gcc.gnu.org/bugzilla/>
2020-03-15 20:14 ` [Bug middle-end/68785] [6 Regression] valgrind reports issues with folding on x86_64 dcb314 at hotmail dot com
2020-03-16 7:43 ` rguenth at gcc dot gnu.org
@ 2020-03-16 8:10 ` dcb314 at hotmail dot com
2 siblings, 0 replies; 3+ messages in thread
From: dcb314 at hotmail dot com @ 2020-03-16 8:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68785
--- Comment #16 from David Binderman <dcb314 at hotmail dot com> ---
Done. See # 94187.
^ permalink raw reply [flat|nested] 3+ messages in thread