https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112845
Bug ID: 112845
Summary: ICE: in extract_insn, at recog.cc:2804 with -Os
-fcf-protection -c
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: iamanonymous.cs at gmail dot com
Target Milestone: ---
*******************************************************************************
OS and Platform:
$ uname -a:
Linux ubuntu 4.15.0-213-generic #224-Ubuntu SMP Mon Jun 19 13:30:12 UTC 2023
x86_64 x86_64 x86_64 GNU/Linux
*******************************************************************************
gcc version:
$ gcc -v
Using built-in specs.
COLLECT_GCC=/root/gcc_set/202311291030/bin/gcc
COLLECT_LTO_WRAPPER=/root/gcc_set/202311291030/libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/root/gcc_set/202311291030
--with-gmp=/root/build_essential --with-mpfr=/root/build_essential
--with-mpc=/root/build_essential --enable-languages=c,c++ --disable-multilib
--with-sanitizer=address,undefined,thread,leak
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20231129 (experimental) (GCC)
git version: 99fa0bfd63d97825c4221dcd3123940f1d0e6291
*******************************************************************************
Program:
$ cat mutant.c
#ifdef __x86_64__
#define ENDBR_IMMEDIATE 0xfa1e0ff3
#else
#define ENDBR_IMMEDIATE 0xfb1e0ff3
#endif
int
func (int* p)
{
return *(p + ENDBR_IMMEDIATE);
}
*******************************************************************************
Command Lines:
$ gcc -Os -fcf-protection -c mutant.c
mutant.c: In function ‘func’:
mutant.c:11:1: error: unrecognizable insn:
11 | }
| ^
(insn 27 7 28 2 (set (reg:DI 0 ax [101])
(const_int 4196274163 [0xfa1e0ff3])) "mutant.c":10:10 discrim 1 -1
(nil))
during RTL pass: cprop_hardreg
mutant.c:11:1: internal compiler error: in extract_insn, at recog.cc:2804
0x7e504e _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc/gcc/rtl-error.cc:108
0x7e506a _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc/gcc/rtl-error.cc:116
0x7e3572 extract_insn(rtx_insn*)
../../gcc/gcc/recog.cc:2804
0xf7209b extract_constrain_insn(rtx_insn*)
../../gcc/gcc/recog.cc:2703
0xf7b182 copyprop_hardreg_forward_1
../../gcc/gcc/regcprop.cc:836
0xf7c389 execute
../../gcc/gcc/regcprop.cc:1423
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Also ICE on trunk, compiler explorer: https://godbolt.org/z/d3x5sbG7W
