[Bug c++/98991] New: ICE: Max. number of generated reload insns per insn is achieved (90)
zhan3299 at purdue dot edu
gcc-bugzilla@gcc.gnu.org
Sun Feb 7 23:00:23 GMT 2021
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98991
Bug ID: 98991
Summary: ICE: Max. number of generated reload insns per insn is
achieved (90)
Product: gcc
Version: 10.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: zhan3299 at purdue dot edu
Target Milestone: ---
Created attachment 50140
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50140&action=edit
poc.cc
Hi all,
I am not sure whether it is indeed an ICE, so I do apologize in advance for any
possible inconvenience.
I have a file generated by my little toy fuzzer, named poc.cc.
When I compile it with: "g++ poc.cc -fpermissive", I got an "internal compiler
error: Max. number of generated reload insns per insn is achieved (90)".
Followings are the detailed information.
--- poc.cc starts ---
namespace{thread_local;__attribute((e()))n(){int;long;float
f;__attribute(())((((__builtin_constant_p(0)))==0));try{}catch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
--- poc.cc ends ---
--- md5 of poc.cc starts ---
c11f34bb78474a2a8bdcb5c5de6d19a2
--- md5 of poc.cc ends ---
--- error trace starts ---
$ ./xg++ poc.cc -fpermissive
poc.cc:1:11: warning: declaration does not declare anything [-fpermissive]
1 | namespace{thread_local;__attribute((e()))n(){int;long;float
f;__attribute(())((((__builtin_constant_p(0)))==0));try{}catch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
| ^~~~~~~~~~~~
poc.cc:1:42: warning: ISO C++ forbids declaration of ‘n’ with no type
[-fpermissive]
1 | namespace{thread_local;__attribute((e()))n(){int;long;float
f;__attribute(())((((__builtin_constant_p(0)))==0));try{}catch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
| ^
poc.cc:1:44: warning: ‘e’ attribute directive ignored [-Wattributes]
1 | namespace{thread_local;__attribute((e()))n(){int;long;float
f;__attribute(())((((__builtin_constant_p(0)))==0));try{}catch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
| ^
poc.cc: In function ‘int {anonymous}::n()’:
poc.cc:1:46: warning: declaration does not declare anything [-fpermissive]
1 | namespace{thread_local;__attribute((e()))n(){int;long;float
f;__attribute(())((((__builtin_constant_p(0)))==0));try{}catch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
| ^~~
poc.cc:1:50: warning: declaration does not declare anything [-fpermissive]
1 | namespace{thread_local;__attribute((e()))n(){int;long;float
f;__attribute(())((((__builtin_constant_p(0)))==0));try{}catch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
| ^~~~
poc.cc:1:237: warning: using rvalue as lvalue [-fpermissive]
1 | ocal;__attribute((e()))n(){int;long;float
f;__attribute(())((((__builtin_constant_p(0)))==0));try{}catch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^
poc.cc:1:338: warning: no return statement in function returning non-void
[-Wreturn-type]
1 |
tch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^
poc.cc: At global scope:
poc.cc:1:339: warning: ISO C++ forbids declaration of ‘y’ with no type
[-fpermissive]
1 |
ch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^
poc.cc: In function ‘int {anonymous}::y()’:
poc.cc:1:343: warning: declaration does not declare anything [-fpermissive]
1 |
nt){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^~~~~
poc.cc:1:349: warning: no return statement in function returning non-void
[-Wreturn-type]
1 |
izeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^
poc.cc: At global scope:
poc.cc:1:351: warning: declaration does not declare anything [-fpermissive]
1 |
eof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^~~~~
poc.cc:1:367: warning: declaration does not declare anything [-fpermissive]
1 |
cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^~~
poc.cc:1:389: warning: ISO C++ forbids declaration of ‘f’ with no type
[-fpermissive]
1 |
=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^
poc.cc: In function ‘int {anonymous}::f()’:
poc.cc:1:393: warning: no return statement in function returning non-void
[-Wreturn-type]
1 |
"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^
during RTL pass: reload
poc.cc: In function ‘int {anonymous}::n()’:
poc.cc:1:338: internal compiler error: maximum number of generated reload insns
per insn achieved (90)
1 |
tch(int){}sizeof(reinterpret_cast<int>(0));asm("":"=rmf"(f),"=d"([t(reinterpret_cast<int>(0))]{}):"0"(((0))),""((0)));static_assert(1);__attribute(())class{}t;{__builtin_unreachable;int{reinterpret_cast<int>(0)};(&f);}}y(){float;}}short;namespace{int;template<typename>f(){}}struct
s;
|
^
0xb37790 lra_constraints(bool)
../../gcc/gcc/lra-constraints.c:4952
0xb259e4 lra(_IO_FILE*)
../../gcc/gcc/lra.c:2440
0xae38d1 do_reload
../../gcc/gcc/ira.c:5523
0xae38d1 execute
../../gcc/gcc/ira.c:5709
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.
--- error trace ends ---
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