[Bug ipa/112517] New: [14 regression] ICE when buliding xen-tools (internal compiler error: in make_ssa_name_fn, at tree-ssanames.cc:354)

[Bug ipa/112517] New: [14 regression] ICE when buliding xen-tools (internal compiler error: in make_ssa_name_fn, at tree-ssanames.cc:354)

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112517

            Bug ID: 112517
           Summary: [14 regression] ICE when buliding xen-tools (internal
                    compiler error: in make_ssa_name_fn, at
                    tree-ssanames.cc:354)
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sjames at gcc dot gnu.org
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Created attachment 56573
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56573&action=edit
rsa.i

Initially reported downstream in Gentoo at https://bugs.gentoo.org/917294 by
Toralf Förster.

```
gcc -Wno-error=maybe-uninitialized -DARCH=i386 -DPLATFORM=pcbios
-DPLATFORM_pcbios -DSECUREBOOT=0 -march=i386 -fomit-frame-pointer
-fstrength-reduce -falign-jumps=1 -falign-loops=1 -falign-functions=1[8/9086]
rred-stack-boundary=2 -mregparm=3 -mrtd -freg-struct-return -m32 -fshort-wchar
-Ui386 -Ulinux -DNVALGRIND -UPXE_DHCP_STRICT -DPXE_DHCP_STRICT -UNO_POST_PROMPT
-DNO_POST_PROMPT -UCONSOLE_SERIAL -DCONSOLE_SERIA
L=1 -fno-stack-protector -Iinclude -I. -Iarch/x86/include -Iarch/i386/include
-Iarch/i386/include/pcbios -Os -g -ffreestanding -fcommon -Wall -W
-Wformat-nonliteral -fno-dwarf2-cfi-asm -fno-exceptions  -fno-u
nwind-tables -fno-asynchronous-unwind-tables -Wno-address
-Wno-stringop-truncation -Wno-address-of-packed-member -fno-PIE -no-pie 
-fcf-protection=none  -Werror -ffunction-sections  -include include/compiler.
h -DASM_TCHAR='@' -DASM_TCHAR_OPS='@'   -DOBJECT=rsa -c crypto/rsa.c -o
bin/rsa.o
during IPA pass: inline
crypto/rsa.c: In function ‘rsa_init’:
crypto/rsa.c:249:21: internal compiler error: in make_ssa_name_fn, at
tree-ssanames.cc:354
  249 |         if ( ( rc = rsa_alloc ( context, modulus.len, exponent.len ) )
!= 0 )
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x5607a5714e59 make_ssa_name_fn(function*, tree_node*, gimple*, unsigned int)
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-ssanames.cc:354
0x5607a6f6e3ce make_ssa_name(tree_node*, gimple*)
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-ssanames.h:98
0x5607a6f6e3ce remap_ssa_name
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:237
0x5607a6f1149a copy_tree_body_r(tree_node**, int*, void*)
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:1226
0x5607a6d60131 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*,
void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_n
ode**, int*, void*), void*, hash_set<tree_node*, false,
default_hash_traits<tree_node*> >*))
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree.cc:11417
0x5607a6d60255 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*,
void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_n
ode**, int*, void*), void*, hash_set<tree_node*, false,
default_hash_traits<tree_node*> >*))
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree.cc:11651
0x5607a6d60255 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*,
void*), void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_n
ode**, int*, void*), void*, hash_set<tree_node*, false,
default_hash_traits<tree_node*> >*))
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree.cc:11651
0x5607a772fb51 remap_type_1
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:595
0x5607a6efff70 remap_type(tree_node*, copy_body_data*)
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:713
0x5607a6ef7e68 remap_decl(tree_node*, copy_body_data*)
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:377
0x5607a6f1e5ff remap_decls
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:762
0x5607a6f1c41c remap_block
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:820
0x5607a6f1c41c remap_blocks
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:839
0x5607a6f1c51a remap_blocks
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:842
0x5607a6f1c51a remap_blocks
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:842
0x5607a6f2c935 expand_call_inline
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:5028
0x5607a6f25253 optimize_inline_calls(tree_node*)
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/tree-inline.cc:5315
0x5607a6ef561a inline_transform(cgraph_node*)
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/ipa-inline-transform.cc:790
0x5607a6ef1935 execute_one_ipa_transform_pass
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/passes.cc:2333
0x5607a6ef1935 execute_all_ipa_transforms(bool)
       
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231112/gcc-14-20231112/gcc/passes.cc:2396
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
make: *** [Makefile.housekeeping:952: bin/rsa.o] Error 1
```

```
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/14/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-14.0.0_pre20231112/work/gcc-14-20231112/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/14
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/14/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/14/python
--enable-languages=c,c++,fortran,rust --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=yes,extra,rtl
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened
14.0.0_pre20231112 p8' --with-gcc-major-version-only --enable-libstdcxx-time
--enable-lto --disable-libstdcxx-pch --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 --enable-cet
--disable-systemtap --enable-valgrind-annotations --disable-vtable-verify
--disable-libvtv --with-zstd --with-isl --disable-isl-version-check
--enable-default-pie --enable-host-pie --enable-host-bind-now
--enable-default-ssp --with-build-config='bootstrap-O3 bootstrap-lto
bootstrap-cet'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231109 (experimental) (Gentoo Hardened 14.0.0_pre20231112
p8)
```

I can reproduce with 'gcc -c rsa.i -O2'.

[Bug ipa/112517] [14 regression] ICE when buliding xen-tools (internal compiler error: in make_ssa_name_fn, at tree-ssanames.cc:354)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112517

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

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

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 112488.

*** This bug has been marked as a duplicate of bug 112488 ***

[Bug ipa/112517] [14 regression] ICE when buliding xen-tools (internal compiler error: in make_ssa_name_fn, at tree-ssanames.cc:354)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112517

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The reduced testcase contains:
```
  size_t tmp_len = ({
    size_t mod_multiply_len = ({
      sizeof(struct {        struct {        } temp_modulus;      });
    });
    sizeof(struct {
      struct {
        bigint_element_t element[(size)];
      } temp_exponent;
      uint8_t mod_multiply[mod_multiply_len];
    });
  });
  struct {
    uint8_t tmp[tmp_len];
  } __attribute__((packed)) * dynamic;
```
Which is the same VLA inside struct as what is in PR 112488 .