https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79984
Bug ID: 79984
Summary: [6/7 Regression] ICE with -Wnonnull-compare
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
Target Milestone: ---
While working on PR79962 I found another ICE:
enum { r = 1 };
__attribute__ ((nonnull (r))) int
f (int *p)
{
return *p;
}
$ ./cc1plus -quiet -Wnonnull-compare ice.cc
ice.cc: In function ‘int f(int*)’:
ice.cc:7:1: internal compiler error: tree check: expected integer_cst, have
const_decl in decompose, at tree.h:5256
}
^
0x137035e tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/home/marek/src/gcc/gcc/tree.c:9819
0x78e322 tree_check(tree_node const*, char const*, int, char const*, tree_code)
/home/marek/src/gcc/gcc/tree.h:3320
0x78e656 wi::int_traits<tree_node const*>::decompose(long*, unsigned int,
tree_node const*)
/home/marek/src/gcc/gcc/tree.h:5256
0xc849e9 wide_int_ref_storage<false>::wide_int_ref_storage<tree_node
const*>(tree_node const* const&, unsigned int)
/home/marek/src/gcc/gcc/wide-int.h:976
0xc82ec4 generic_wide_int<wide_int_ref_storage<false>
>::generic_wide_int<tree_node const*>(tree_node const* const&, unsigned int)
/home/marek/src/gcc/gcc/wide-int.h:753
0x138531d bool wi::eq_p<tree_node const*, int>(tree_node const* const&, int
const&)
/home/marek/src/gcc/gcc/wide-int.h:1747
0x13679a9 tree_int_cst_sgn(tree_node const*)
/home/marek/src/gcc/gcc/tree.c:7365
0x1368797 compare_tree_int(tree_node const*, unsigned long)
/home/marek/src/gcc/gcc/tree.c:7574
0x13822b5 nonnull_arg_p(tree_node const*)
/home/marek/src/gcc/gcc/tree.c:14349
0x19d3f97 do_warn_nonnull_compare
/home/marek/src/gcc/gcc/gimple-ssa-nonnull-compare.c:42
0x19d433a execute
/home/marek/src/gcc/gcc/gimple-ssa-nonnull-compare.c:142
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with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
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