https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93173
Bug ID: 93173
Summary: "error: incorrect sharing of tree nodes" and "internal
compiler error: verify_gimple failed"
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: sbergman at redhat dot com
Target Milestone: ---
I think this only started recently on GCC trunk, I observe it at least with a
build based on today's 62a72308e1c5479bb3a9e8cacd45d49db219aaec "New bitfield
testcases":
> $ cat test.cc
> template<typename> struct S1 {
> S1(S1 &);
> ~S1();
> };
> struct S2 {
> S1<void> x;
> int y;
> int z;
> };
> void f(S1<void> x, int y, int z) { new S2{x, y, z}; }
> $ g++ -c test.cc
> test.cc: In function ‘void f(S1<void>, int, int)’:
> test.cc:10:6: error: incorrect sharing of tree nodes
> 10 | void f(S1<void> x, int y, int z) { new S2{x, y, z}; }
> | ^
> MEM[(struct S2 *)D.2374]
> MEM[(struct S2 *)D.2374].z = z;
> during GIMPLE pass: cfg
> test.cc:10:6: internal compiler error: verify_gimple failed
> 0xfda96a verify_gimple_in_cfg(function*, bool)
> ../../src/gcc/tree-cfg.c:5445
> 0xec1caf execute_function_todo
> ../../src/gcc/passes.c:1983
> 0xec2aec do_per_function
> ../../src/gcc/passes.c:1638
> 0xec2aec execute_todo
> ../../src/gcc/passes.c:2037
> 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.
(I assume this is a different issue than open issue 93033, given my build
includes b5cabe5e4b2778223d7a910ac3a5bbd61bff007c "PR c++/93033 - incorrect
tree node sharing with array init.")
