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From: "gjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/112830] New: internal compiler error: in
 convert_memory_address_addr_space_1, at explow.cc:302
Date: Sun, 03 Dec 2023 12:22:36 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112830

            Bug ID: 112830
           Summary: internal compiler error: in
                    convert_memory_address_addr_space_1, at explow.cc:302
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gjl at gcc dot gnu.org
  Target Milestone: ---

Compile the following C test case with avr-gcc -S:

typedef __SIZE_TYPE__ size_t;

void copy_n (void *vdst, const __memx void *vsrc, size_t n)
{
    typedef struct { char a[n]; } T;
    T *dst =3D (T*) vdst;
    const __memx T *src =3D (const __memx T*) vsrc;
    *dst =3D *src;
}

during RTL pass: expand
ice.c: In function 'copy_n':
ce.c:20:10: internal compiler error: in convert_memory_address_addr_space_1=
, at
explow.cc:302
   20 |     *dst =3D *src;
      |     ~~~~~^~~~~~

It occurs with at least v5.4 to current master (future v14).

Configured with: ../../source/gcc-master/configure --target=3Davr --disable=
-nls
--with-dwarf2 --with-gnu-as --with-gnu-ld --disable-shared
--enable-checking=3Drelease --enable-languages=3Dc,c++=