https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98545
Bug ID: 98545
Summary: [11 Regression] ICE in write_expression, at
cp/mangle.c:3352
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at debian dot org
Target Milestone: ---
seen with trunk 20210102, building the sopt package
$ cat serial_vs_parallel_padmm.ii
class Matrix {
public:
Matrix();
template <typename OtherDerived> Matrix(OtherDerived);
};
template <class = double> using Vector = Matrix;
class L1TightFrame {
protected:
template <class T0, class T1> void operator()(T0, double, T1);
};
class L1 : L1TightFrame {
public:
template <class... T>
auto tight_frame(T...) -> decltype(operator()(T()...)) {}
};
template <class> class ImagingProximalADMM {
public:
template <class DERIVED> ImagingProximalADMM(DERIVED);
L1 l1_proximal() const;
int operator()() {
int result, __trans_tmp_10;
Vector<> out, __trans_tmp_12;
operator()(out, __trans_tmp_10, __trans_tmp_12);
return result;
}
int operator()(Vector<> &, Vector<> const &, Vector<> const &) const;
template <class T0, class T1>
void l1_proximal(T0 out, double gamma, T1 x) const {
l1_proximal().tight_frame(out, gamma, x);
}
};
template <class SCALAR>
int ImagingProximalADMM<SCALAR>::operator()(Vector<> &, Vector<> const &,
Vector<> const &) const {
int result;
[&](Vector<> out, double gamma, Vector<> x) { l1_proximal(out, gamma, x); };
return result;
}
Vector<> y = ImagingProximalADMM<double>(y)();
$ g++ -c -O0 -std=gnu++11 serial_vs_parallel_padmm.ii
serial_vs_parallel_padmm.ii: In instantiation of ‘decltype
(((L1*)this)->L1TightFrame::operator()(T()...)) L1::tight_frame(T ...) [with T
= {Matrix, double, Matrix}]’:
serial_vs_parallel_padmm.ii:14:8: internal compiler error: in write_expression,
at cp/mangle.c:3352
14 | auto tight_frame(T...) -> decltype(operator()(T()...)) {}
| ^~~~~~~~~~~
0x97242d write_expression
../../src/gcc/cp/mangle.c:3352
0x190cd14 write_expression
../../src/gcc/cp/mangle.c:3449
0x14b393f write_type
../../src/gcc/cp/mangle.c:2343
0x14bafb1 write_bare_function_type
../../src/gcc/cp/mangle.c:2746
0x12bdcb0 mangle_decl_string
../../src/gcc/cp/mangle.c:4001
0x12bcfcc get_mangled_id
../../src/gcc/cp/mangle.c:4022
0x12bcfcc mangle_decl(tree_node*)
../../src/gcc/cp/mangle.c:4060
0x12b4558 decl_assembler_name(tree_node*)
../../src/gcc/tree.c:708
0x12b4558 symtab_node::get_comdat_group_id()
../../src/gcc/cgraph.h:253
0x12b4558 analyze_functions
../../src/gcc/cgraphunit.c:1185
0x17f0543 symbol_table::finalize_compilation_unit()
../../src/gcc/cgraphunit.c:2513
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
