https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119993
Bug ID: 119993
Summary: internal compiler error: populationSize.0 from
writePopulation referenced in readPopulation
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: xieym3 at zohomail dot com
Target Milestone: ---
$ cat file.c
#include <stdlib.h>
int main(int argc, char** argv)
{
FILE* input;
long i,j;
if(input==stdin) {
#include <stdio.h>
long populationSize = 10;
typedef struct _Population
{
double fitness[populationSize];
char genome[2][1];
}Population;
Population readPopulation(FILE* input)
{
Population population;
return population;
}
void writePopulation(FILE* output, Population population)
{
}
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=/data/xieym/install/gcc-trunk/bin/gcc
COLLECT_LTO_WRAPPER=/data/xieym/install/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/16.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /data/xieym/src/gcc/configure --enable-coverage
--enable-checking --disable-multilib --disable-shared --disable-bootstrap
--enable-languages=c,c++ --prefix=/data/xieym/install/gcc-trunk
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 16.0.0 20250429 (experimental) (GCC)
$ gcc-trunk -std=c2x file.c -o /dev/null
<source>:2:5: internal compiler error: populationSize.0 from writePopulation
referenced in readPopulation
2 | int main(int argc, char** argv)
| ^~~~
0x2ea0055 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x2eb7026 internal_error(char const*, ...)
???:0
0x1a98d5c 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_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
???:0
0x135c020 walk_gimple_op(gimple*, tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
???:0
0x135c33e walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
???:0
0x135c575 walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
???:0
0x135c439 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
???:0
0x135c575 walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
???:0
0x135c3fd walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
???:0
0x135c575 walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
???:0
0x17c71e8 lower_nested_functions(tree_node*)
???:0
0x117bca4 cgraph_node::analyze()
???:0
0x117f241 symbol_table::finalize_compilation_unit()
???: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.
Compiler returned: 1
Godbold url: https://godbolt.org/z/o4Ea8ccq1
