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* [Bug tree-optimization/95580] New: [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34
@ 2020-06-08 15:23 marxin at gcc dot gnu.org
2020-06-08 15:23 ` [Bug tree-optimization/95580] " marxin at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: marxin at gcc dot gnu.org @ 2020-06-08 15:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95580
Bug ID: 95580
Summary: [11 Regression] ICE in tree_strip_any_location_wrapper
at gcc/tree.h:4011 since r11-959-gb825a22890740f34
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: msebor at gcc dot gnu.org
Target Milestone: ---
I see the following ICE:
$ cat ov.i
int main(int p1, char **p2) {
long a = sizeof(void);
if (__builtin_strcmp(p2[1], "")) {
void *p = __builtin_malloc(4);
((char *)p)[a] ^= 1;
}
if (__builtin_strcmp(p2[1], "quarantine"))
for (int i;; i++)
;
}
$ gcc ov.i -O1 -Wextra -fno-tree-dse -c
‘*(
during GIMPLE pass: uninit
In function ‘main’:
Segmentation fault
1 | int main(int p1, char **p2) {
| ^~~~
0xdb19cf crash_signal
/home/marxin/Programming/gcc/gcc/toplev.c:328
0x7ffff78b852f ???
/usr/src/debug/glibc-2.31-5.9.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x105c38a location_wrapper_p(tree_node const*)
/home/marxin/Programming/gcc/gcc/tree.h:3999
0x105c38a tree_strip_any_location_wrapper(tree_node*)
/home/marxin/Programming/gcc/gcc/tree.h:4011
0x105c38a integer_onep(tree_node const*)
/home/marxin/Programming/gcc/gcc/tree.c:2573
0x8b5f22 c_pretty_printer::unary_expression(tree_node*)
/home/marxin/Programming/gcc/gcc/c-family/c-pretty-print.c:1792
0x821f7d c_tree_printer
/home/marxin/Programming/gcc/gcc/c/c-objc-common.c:317
0x821f7d c_tree_printer
/home/marxin/Programming/gcc/gcc/c/c-objc-common.c:254
0x18221ac pp_format(pretty_printer*, text_info*)
/home/marxin/Programming/gcc/gcc/pretty-print.c:1475
0x18073be diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
/home/marxin/Programming/gcc/gcc/diagnostic.c:1159
0x1809928 diagnostic_impl
/home/marxin/Programming/gcc/gcc/diagnostic.c:1309
0x1809928 warning_at(unsigned int, int, char const*, ...)
/home/marxin/Programming/gcc/gcc/diagnostic.c:1446
0xfb998c maybe_warn_operand
/home/marxin/Programming/gcc/gcc/tree-ssa-uninit.c:431
0xfbb666 warn_uninitialized_vars
/home/marxin/Programming/gcc/gcc/tree-ssa-uninit.c:640
0xfbfb72 execute
/home/marxin/Programming/gcc/gcc/tree-ssa-uninit.c:2936
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/95580] [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34
2020-06-08 15:23 [Bug tree-optimization/95580] New: [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34 marxin at gcc dot gnu.org
@ 2020-06-08 15:23 ` marxin at gcc dot gnu.org
2020-06-08 17:25 ` [Bug c/95580] " jakub at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: marxin at gcc dot gnu.org @ 2020-06-08 15:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95580
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |11.0
Known to work| |10.1.0
Ever confirmed|0 |1
Target Milestone|--- |11.0
Last reconfirmed| |2020-06-08
Status|UNCONFIRMED |NEW
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/95580] [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34
2020-06-08 15:23 [Bug tree-optimization/95580] New: [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34 marxin at gcc dot gnu.org
2020-06-08 15:23 ` [Bug tree-optimization/95580] " marxin at gcc dot gnu.org
@ 2020-06-08 17:25 ` jakub at gcc dot gnu.org
2020-06-08 17:31 ` jakub at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2020-06-08 17:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95580
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Component|tree-optimization |c
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
/* PR
void bar (void);
void
foo (int x)
{
if (x == 0)
{
void *p = __builtin_malloc (16);
((char *)p)[1] ^= 1;
}
bar ();
}
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/95580] [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34
2020-06-08 15:23 [Bug tree-optimization/95580] New: [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34 marxin at gcc dot gnu.org
2020-06-08 15:23 ` [Bug tree-optimization/95580] " marxin at gcc dot gnu.org
2020-06-08 17:25 ` [Bug c/95580] " jakub at gcc dot gnu.org
@ 2020-06-08 17:31 ` jakub at gcc dot gnu.org
2020-06-09 6:40 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2020-06-08 17:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95580
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 48707
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48707&action=edit
gcc11-pr95580.patch
Untested fix.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/95580] [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34
2020-06-08 15:23 [Bug tree-optimization/95580] New: [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34 marxin at gcc dot gnu.org
` (2 preceding siblings ...)
2020-06-08 17:31 ` jakub at gcc dot gnu.org
@ 2020-06-09 6:40 ` cvs-commit at gcc dot gnu.org
2020-06-09 6:40 ` jakub at gcc dot gnu.org
2020-06-14 10:07 ` cvs-commit at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-06-09 6:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95580
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:
https://gcc.gnu.org/g:d6dbb71e468d0db561cc9eca99eeaca1efb81c11
commit r11-1081-gd6dbb71e468d0db561cc9eca99eeaca1efb81c11
Author: Jakub Jelinek <jakub@redhat.com>
Date: Tue Jun 9 08:39:36 2020 +0200
c-family: Fix up MEM_REF printing [PR95580]
The C FE in the MEM_REF printing ICEs if the type of the first argument
(which due to useless pointer conversions can be an arbitrary type) is a
pointer to an incomplete type. The code just wants to avoid printing a
cast
if it is a pointer to single byte elements.
2020-06-09 Jakub Jelinek <jakub@redhat.com>
PR c/95580
* c-pretty-print.c (c_pretty_printer::unary_expression): Handle the
case when MEM_REF's first argument has type pointer to incomplete
type.
* gcc.dg/pr95580.c: New test.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/95580] [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34
2020-06-08 15:23 [Bug tree-optimization/95580] New: [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34 marxin at gcc dot gnu.org
` (3 preceding siblings ...)
2020-06-09 6:40 ` cvs-commit at gcc dot gnu.org
@ 2020-06-09 6:40 ` jakub at gcc dot gnu.org
2020-06-14 10:07 ` cvs-commit at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2020-06-09 6:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95580
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/95580] [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34
2020-06-08 15:23 [Bug tree-optimization/95580] New: [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34 marxin at gcc dot gnu.org
` (4 preceding siblings ...)
2020-06-09 6:40 ` jakub at gcc dot gnu.org
@ 2020-06-14 10:07 ` cvs-commit at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-06-14 10:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95580
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:
https://gcc.gnu.org/g:b2229175b53e3b1c58b4aa963e3d0bb06ca063bf
commit r10-8297-gb2229175b53e3b1c58b4aa963e3d0bb06ca063bf
Author: Jakub Jelinek <jakub@redhat.com>
Date: Tue Jun 9 08:39:36 2020 +0200
c-family: Fix up MEM_REF printing [PR95580]
The C FE in the MEM_REF printing ICEs if the type of the first argument
(which due to useless pointer conversions can be an arbitrary type) is a
pointer to an incomplete type. The code just wants to avoid printing a
cast
if it is a pointer to single byte elements.
2020-06-09 Jakub Jelinek <jakub@redhat.com>
PR c/95580
* c-pretty-print.c (c_pretty_printer::unary_expression): Handle the
case when MEM_REF's first argument has type pointer to incomplete
type.
* gcc.dg/pr95580.c: New test.
(cherry picked from commit d6dbb71e468d0db561cc9eca99eeaca1efb81c11)
^ permalink raw reply [flat|nested] 7+ messages in thread
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2020-06-08 15:23 [Bug tree-optimization/95580] New: [11 Regression] ICE in tree_strip_any_location_wrapper at gcc/tree.h:4011 since r11-959-gb825a22890740f34 marxin at gcc dot gnu.org
2020-06-08 15:23 ` [Bug tree-optimization/95580] " marxin at gcc dot gnu.org
2020-06-08 17:25 ` [Bug c/95580] " jakub at gcc dot gnu.org
2020-06-08 17:31 ` jakub at gcc dot gnu.org
2020-06-09 6:40 ` cvs-commit at gcc dot gnu.org
2020-06-09 6:40 ` jakub at gcc dot gnu.org
2020-06-14 10:07 ` cvs-commit at gcc dot gnu.org
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