https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79786
Bug ID: 79786
Summary: ICE tree check: expected class 'type', have
'declaration' (var_decl) in iamcu_alignment, at
config/i386/i386.c:30263
Product: gcc
Version: 7.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gerhard.steinmetz.fort...@t-online.de
Target Milestone: ---
Over 400 testfiles from ./gcc/testsuite/g++.dg/*
expose a symptom with options "-m32 -miamcu"
and version 6/7 (-miamcu not implemented before) :
./g++.dg/rtti/anon-ns1.C
./g++.dg/opt/inline1.C
./g++.dg/abi/inline1.C
./g++.dg/abi/rtti3.C
./g++.dg/eh/throw3.C
./g++.dg/abi/vtt1.C
./g++.dg/opt/vt1.C
...
$ cat vt1.C # for example
struct S
{
virtual void vm (void) {};
} x;
$ gcc-7-20170226 -m32 -miamcu -c vt1.C
vt1.C:4:4: internal compiler error: tree check: expected class 'type', have
'declaration' (var_decl) in iamcu_alignment, at config/i386/i386.c:30263
} x;
^
0x1090287 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc/tree.c:9866
0x1111538 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
../../gcc/tree.h:3187
0x1111538 iamcu_alignment
../../gcc/config/i386/i386.c:30263
0x115203b ix86_data_alignment(tree_node*, int, bool)
../../gcc/config/i386/i386.c:30317
0x7d2cff emit_tinfo_decl(tree_node*)
../../gcc/cp/rtti.c:1616
0x777894 c_parse_final_cleanups()
../../gcc/cp/decl2.c:4568
