[Bug sanitizer/114687] New: ICE: in edge_before_returns_twice_call, at gimple-iterator.cc:981

["iamanonymous.cs at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114687

            Bug ID: 114687
           Summary: ICE: in edge_before_returns_twice_call, at
                    gimple-iterator.cc:981
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: iamanonymous.cs at gmail dot com
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
  Target Milestone: ---

Compiler Explorer: https://godbolt.org/z/vPM1Gshzx

*******************************************************************************
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/202404101100/bin/gcc
COLLECT_LTO_WRAPPER=/root/gcc_set/202404101100/libexec/gcc/x86_64-pc-linux-gnu/14.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/root/gcc_set/202404101100
--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 14.0.1 20240410 (experimental) (GCC) 

git version: 0774240b4df9a9bc48ce33a9625788e402498f5a
*******************************************************************************
Program:
$ cat mutant.c
int a;
int b(int);
__attribute__((pure, returns_twice)) int c() {
  a = 1;
  while (a)
    a = 2;
  return a;
}
int e(void) {
  int d = c();
  b(d);
}

*******************************************************************************
Command Lines:
$ gcc -fsanitize=address -O1 -c mutant.c
during GIMPLE pass: asan
mutant.c: In function ‘e’:
mutant.c:9:5: internal compiler error: in edge_before_returns_twice_call, at
gimple-iterator.cc:981
    9 | int e(void) {
      |     ^
0x792bf8 edge_before_returns_twice_call
        ../../gcc/gcc/gimple-iterator.cc:981
0xcb169e gsi_safe_insert_before(gimple_stmt_iterator*, gimple*)
        ../../gcc/gcc/gimple-iterator.cc:1054
0x1060c36 maybe_instrument_call
        ../../gcc/gcc/asan.cc:3032
0x1060c36 transform_statements
        ../../gcc/gcc/asan.cc:3118
0x1060fe7 asan_instrument
        ../../gcc/gcc/asan.cc:4262
0x1060fe7 execute
        ../../gcc/gcc/asan.cc:4303
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.