https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117254
Bug ID: 117254
Summary: ICE: have var_decl in get_len, at tree.h:6512
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: iamanonymous.cs at gmail dot com
Target Milestone: ---
*******************************************************************************
OS and Platform:
$ uname -a:
Linux 65dac7c84719 4.15.0-213-generic #224-Ubuntu SMP Mon Jun 19 13:30:12 UTC
2023 x86_64 x86_64 x86_64 GNU/Linux
*******************************************************************************
gcc version:
Using built-in specs.
COLLECT_GCC=/home/software/gcc-trunk-3aa004f/bin/gcc
COLLECT_LTO_WRAPPER=/home/software/gcc-trunk-3aa004f/libexec/gcc/x86_64-pc-linux-gnu/15.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --disable-multilib --disable-bootstrap
--enable-languages=c,c++ --prefix=/home/software/gcc-trunk-3aa004f
--enable-coverage
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 15.0.0 20240630 (experimental) (GCC)
*******************************************************************************
Program:
$ cat mutant.c
int g;
char *strncpy();
#define a(b, c, d) strncpy(b, c)
void e() {
struct {
__attribute__((nonstring)) char bn[g];
} f;
a(f, f.bn, );
}
*******************************************************************************
Command Lines:
$ gcc mutant.c
mutant.c: In function 'e':
mutant.c:8:5: warning: incompatible type for argument 1 of 'strncpy'
[-Wbuiltin-declaration-mismatch]
8 | a(f, f.bn, );
| ^
mutant.c:3:28: note: in definition of macro 'a'
3 | #define a(b, c, d) strncpy(b, c)
| ^
mutant.c:2:7: note: expected 'char *' but argument is of type 'struct
<anonymous>'
2 | char *strncpy();
| ^~~~~~~
mutant.c:3:20: warning: too few arguments to built-in function 'strncpy'
expecting 3 [-Wbuiltin-declaration-mismatch]
3 | #define a(b, c, d) strncpy(b, c)
| ^~~~~~~
mutant.c:8:3: note: in expansion of macro 'a'
8 | a(f, f.bn, );
| ^
mutant.c:2:7: note: declared here
2 | char *strncpy();
| ^~~~~~~
during GIMPLE pass: waccess
mutant.c:4:6: internal compiler error: tree check: expected integer_cst, have
var_decl in get_len, at tree.h:6503
4 | void e() {
| ^
0x5071bcf diagnostic_context::report_diagnostic(diagnostic_info*)
???:0
0x50724a1 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, int, char const*, __va_list_tag (*) [1],
diagnostic_t)
???:0
0x50924c7 internal_error(char const*, ...)
???:0
0x2685230 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
???:0
0xd4aa08 tree_check(tree_node const*, char const*, int, char const*, tree_code)
???:0
0x103d6d7 wi::extended_tree<128>::get_len() const
???:0
0x103d4eb wi::int_traits<generic_wide_int<wi::extended_tree<128> >
>::decompose(long*, unsigned int, generic_wide_int<wi::extended_tree<128> >
const&)
???:0
0x103d0c4 wide_int_ref_storage<true,
false>::wide_int_ref_storage<generic_wide_int<wi::extended_tree<128> >
>(generic_wide_int<wi::extended_tree<128> > const&, unsigned int)
???:0
0x103c402 generic_wide_int<wide_int_ref_storage<true, false>
>::generic_wide_int<generic_wide_int<wi::extended_tree<128> >
>(generic_wide_int<wi::extended_tree<128> > const&, unsigned int)
???:0
0x169187b wi::binary_traits<generic_wide_int<wi::extended_tree<128> >, int,
wi::int_traits<generic_wide_int<wi::extended_tree<128> > >::precision_type,
wi::int_traits<int>::precision_type>::result_type
wi::add<generic_wide_int<wi::extended_tree<128> >,
int>(generic_wide_int<wi::extended_tree<128> > const&, int const&)
???:0
0x168f2b2 wi::binary_traits<generic_wide_int<wi::extended_tree<128> >, int,
wi::int_traits<generic_wide_int<wi::extended_tree<128> > >::precision_type,
wi::int_traits<int>::precision_type>::operator_result
operator+<generic_wide_int<wi::extended_tree<128> >,
int>(generic_wide_int<wi::extended_tree<128> > const&, int const&)
???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Also ICE on trunk.
Compiler Explorer: https://godbolt.org/z/bn19rjc4o
