[Bug c/100732] New: ICE: in ao_ref_init_from_ptr_and_range, at tree-ssa-alias.c:824

[cnsun at uwaterloo dot ca]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100732

            Bug ID: 100732
           Summary: ICE: in ao_ref_init_from_ptr_and_range, at
                    tree-ssa-alias.c:824
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: cnsun at uwaterloo dot ca
  Target Milestone: ---

$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.bSd6dDcXdE-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20210523 (experimental) [master revision
:c92372ce3:15d30d2f20794d29ceabcfd57d230d6387284115] (GCC)

$ cat mutant.c
d4(i) { __builtin_sprintf(d4, "%s", i); }

$ gcc-trunk -O3 -Wall mutant.c
mutant.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
    1 | d4(i) { __builtin_sprintf(d4, "%s", i); }
      | ^~
mutant.c: In function ‘d4’:
mutant.c:1:1: warning: type of ‘i’ defaults to ‘int’ [-Wimplicit-int]
mutant.c:1:27: warning: passing argument 1 of ‘__builtin_sprintf’ from
incompatible pointer type [-Wincompatible-pointer-types]
    1 | d4(i) { __builtin_sprintf(d4, "%s", i); }
      |                           ^~
      |                           |
      |                           int (*)()
mutant.c:1:27: note: expected ‘char *’ but argument is of type ‘int (*)()’
mutant.c:1:33: warning: format ‘%s’ expects argument of type ‘char *’, but
argument 3 has type ‘int’ [-Wformat=]
    1 | d4(i) { __builtin_sprintf(d4, "%s", i); }
      |                                ~^   ~
      |                                 |   |
      |                                 |   int
      |                                 char *
      |                                %d
mutant.c:1:41: warning: control reaches end of non-void function
[-Wreturn-type]
    1 | d4(i) { __builtin_sprintf(d4, "%s", i); }
      |                                         ^
during GIMPLE pass: uninit
mutant.c:1:1: internal compiler error: in ao_ref_init_from_ptr_and_range, at
tree-ssa-alias.c:824
    1 | d4(i) { __builtin_sprintf(d4, "%s", i); }
      | ^~
0x7750a5 ao_ref_init_from_ptr_and_range
        /tmp/tmp.bSd6dDcXdE-gcc-builder/gcc/gcc/tree-ssa-alias.c:824
0x113b3b1 maybe_warn_pass_by_reference
        /tmp/tmp.bSd6dDcXdE-gcc-builder/gcc/gcc/tree-ssa-uninit.c:545
0x113b3b1 warn_uninitialized_vars
        /tmp/tmp.bSd6dDcXdE-gcc-builder/gcc/gcc/tree-ssa-uninit.c:659
0x114056a execute
        /tmp/tmp.bSd6dDcXdE-gcc-builder/gcc/gcc/tree-ssa-uninit.c:3030
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with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
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