https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79089
Bug ID: 79089
Summary: error: incorrect sharing of tree nodes
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 40519
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40519&action=edit
C source code
The attached code, when compiled by today's gcc trunk does this:
$ ../results/bin/gcc -c -w bug329.c
../../../proto/bgp/attrs.c: In function ‘bgp_free_prefix_table’:
../../../proto/bgp/attrs.c:938:1: error: incorrect sharing of tree nodes
p->prefix_hash
D.5411 = p->prefix_hash;
../../../proto/bgp/attrs.c:938:1: internal compiler error: verify_gimple failed
0xcd74b1 verify_gimple_in_cfg(function*, bool)
../../trunk/gcc/tree-cfg.c:5266
0xb812cb execute_function_todo
../../trunk/gcc/passes.c:1965
0xb82528 do_per_function
../../trunk/gcc/passes.c:1649
0xb82528 execute_todo
../../trunk/gcc/passes.c:2015
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
I've also tracked down a range of revisions which bracket the culprit revision:
$ ../results.241433/bin/gcc -c -w bug329.c
$ ../results.242353/bin/gcc -c -w bug329.c
../../../proto/bgp/attrs.c: In function ‘bgp_free_prefix_table’:
../../../proto/bgp/attrs.c:938:1: error: incorrect sharing of tree nodes
p->prefix_hash
D.5411 = p->prefix_hash;
../../../proto/bgp/attrs.c:938:1: internal compiler error: verify_gimple failed
0xc6aa09 verify_gimple_in_cfg(function*, bool)
../../trunk/gcc/tree-cfg.c:5208
0xb1735b execute_function_todo
../../trunk/gcc/passes.c:1965
0xb18578 do_per_function
../../trunk/gcc/passes.c:1649
0xb18578 execute_todo
../../trunk/gcc/passes.c:2015
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
