[Bug c++/102757] New: ICE on amd64 (internal compiler error: in expand_expr_real_1, at expr.c:10014)

[Bug c++/102757] New: ICE on amd64 (internal compiler error: in expand_expr_real_1, at expr.c:10014)

[sam at gentoo dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102757

            Bug ID: 102757
           Summary: ICE on amd64 (internal compiler error: in
                    expand_expr_real_1, at expr.c:10014)
           Product: gcc
           Version: 9.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sam at gentoo dot org
  Target Milestone: ---

Created attachment 51605
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51605&action=edit
logging.ii (minimised reproducer)

Originally reported downstream at https://bugs.gentoo.org/806094.

I hit the issue when building android-tools-31.0.0_p1. Note that this issue
does not seem to occur with gcc 10.3.0 or gcc 11.2.0.

I've managed to minimise the crasher to:
```
$ cat logging.ii
struct Trans_NS___cxx11_basic_string {
  int *c_str();
};
int snprintf(...);
enum LogSeverity {};
enum LogId {};
template <typename F>
void SplitByLogdChunks(LogId, LogSeverity, char *, char *, int, char *msg, F) {
  long max_size;
  Trans_NS___cxx11_basic_string file_header;
  char logd_chunk[max_size];
  auto write_to_logd_chunk = [&](char *, int) {
    *file_header.c_str() = snprintf(sizeof(logd_chunk));
  };
  char newline;
  write_to_logd_chunk(msg, newline);
}
void LogdLogChunk();
LogId LogdLogger_id;
LogSeverity LogdLogger_severity;
char LogdLogger_tag, LogdLogger_file, LogdLogger_message;
int LogdLogger_line;
void LogdLogger() {
  SplitByLogdChunks(LogdLogger_id, LogdLogger_severity, &LogdLogger_tag,
                    &LogdLogger_file, LogdLogger_line, &LogdLogger_message,
                    LogdLogChunk);
}
```

It can be induced via:
```
$ x86_64-pc-linux-gnu-g++ logging.ii
during RTL pass: expand
logging.ii: In lambda function:
logging.ii:13:36: internal compiler error: in expand_expr_real_1, at
expr.c:10014
   13 |     *file_header.c_str() = snprintf(sizeof(logd_chunk));
      |                            ~~~~~~~~^~~~~~~~~~~~~~~~~~~~
unrecognized DWARF version in .debug_info at 6
unrecognized DWARF version in .debug_info at 6
unrecognized DWARF version in .debug_info at 6
unrecognized DWARF version in .debug_info at 6
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.gentoo.org/> for instructions.
```

```
$ x86_64-pc-linux-gnu-g++ -v
Using built-in specs.
COLLECT_GCC=x86_64-pc-linux-gnu-g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/9.4.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /var/tmp/portage/sys-devel/gcc-9.4.0/work/gcc-9.4.0/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/9.4.0
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.4.0/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.4.0
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.4.0/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.4.0/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.4.0/include/g++-v9
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/9.4.0/python
--enable-languages=c,c++,jit,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=release
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened 9.4.0
p1' --enable-esp --enable-libstdcxx-time --enable-host-shared --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--enable-multilib --with-multilib-list=m32,m64 --disable-fixed-point
--enable-targets=all --enable-libgomp --disable-libssp --disable-libada
--disable-systemtap --disable-vtable-verify --disable-libvtv --enable-lto
--with-isl --disable-isl-version-check --enable-default-pie
--enable-default-ssp
Thread model: posix
gcc version 9.4.0 (Gentoo Hardened 9.4.0 p1)
```

[Bug c++/102757] ICE on amd64 (internal compiler error: in expand_expr_real_1, at expr.c:10014)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102757

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 86216.

*** This bug has been marked as a duplicate of bug 86216 ***