https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118652
Bug ID: 118652
Summary: co_yield interaction with range-based for causes ICE
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: elexunix at gmail dot com
Target Milestone: ---
Original command that failed: g++ -std=c++23 solve.cpp
I have minimized solve.cpp to a very short file, but the code doesn't make any
sense now, of course
⟫ g++ -std=c++23 -freport-bug solve.cpp
solve.cpp: In function ‘void inner(_Z5innerv.Frame*)’:
solve.cpp:7:22: internal compiler error: in gimplify_var_or_parm_decl, at
gimplify.cc:3346
7 | co_yield p;
| ^
0x296821f internal_error(char const*, ...)
../.././gcc/diagnostic-global-context.cc:517
0xaaf6a1 fancy_abort(char const*, int, char const*)
../.././gcc/diagnostic.cc:1722
0x8eb36f gimplify_var_or_parm_decl
../.././gcc/gimplify.cc:3346
0x10e7972 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../.././gcc/gimplify.cc:19732
0x10f4c52 gimplify_addr_expr
../.././gcc/gimplify.cc:7578
0x10e7c4d gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../.././gcc/gimplify.cc:19312
0x10fc3d4 gimplify_expr
../.././gcc/gimplify.cc:20372
0x10fc3d4 gimplify_arg(tree_node**, gimple**, unsigned long, bool)
../.././gcc/gimplify.cc:3832
0x10fc917 gimplify_call_expr
../.././gcc/gimplify.cc:4623
0x10e8662 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../.././gcc/gimplify.cc:19234
0x10ff78f gimplify_modify_expr
../.././gcc/gimplify.cc:7131
0x10e7678 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../.././gcc/gimplify.cc:19265
0x10e8726 gimplify_cleanup_point_expr
../.././gcc/gimplify.cc:8254
0x10e8726 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../.././gcc/gimplify.cc:19664
0x10e9d94 gimplify_stmt(tree_node**, gimple**)
../.././gcc/gimplify.cc:8254
0x10e8a5b gimplify_statement_list
../.././gcc/gimplify.cc:2285
0x10e8a5b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../.././gcc/gimplify.cc:19716
0x10e9d94 gimplify_stmt(tree_node**, gimple**)
../.././gcc/gimplify.cc:8254
0x10e76da gimplify_and_add(tree_node*, gimple**)
../.././gcc/gimplify.cc:547
0x10e76da gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../.././gcc/gimplify.cc:19617
Please submit a full bug report, with preprocessed source.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Preprocessed source stored into /tmp/ccSPiPCI.out file, please attach this to
your bugreport.
⟫ cat solve.cpp
#include <generator>
#include <vector>
std::generator<int> inner() {
for (int a : {4}) { // this loop seems important
for (int p : inner()) {
co_yield p;
}
}
}
std::generator<int> outer() {
for (int p : inner()) {
co_yield p;
}
}
int main() {
outer();
}
⟫ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/15.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 15.0.1 20250124 (experimental) (GCC)
The file /tmp/ccSPiPCI.out is the single file attached below. I compiled this
fresh g++ from the trunk this night myself, but the bug also reproduces
