| Issue |
146508
|
| Summary |
Clanf SISEGV in addAssociatedClassesAndNamespaces since clang 9.0
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
mariete1223
|
I have not been able to reduce it more. The original version without reducing gave the error addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0, repeatedly until stack exhaustion, the reduced one does not seem to give any feedback, so both versions will be posted.
## Stack dump:
```
#0 0x00005c1e0215318f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/local/bin/clang-21+0x3c4a18f)
#1 0x00005c1e02150bd4 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#2 0x0000723f94a83420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
#3 0x00005c1e04ab0330 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#4 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#5 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#6 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#7 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#8 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#9 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#10 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#11 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#12 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#13 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#14 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#15 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#16 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#17 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#18 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#19 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#20 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#21 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#22 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#23 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#24 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#25 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#26 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#27 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#28 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#29 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#30 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#31 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#32 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#33 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#34 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#35 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#36 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#37 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#38 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#39 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
#40 0x00005c1e04ab2eea addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#41 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#42 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
...
#254 0x00005c1e04ab2f38 addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::TemplateArgument const&) SemaLookup.cpp:0:0
#255 0x00005c1e04ab08bf addAssociatedClassesAndNamespaces((anonymous namespace)::AssociatedLookup&, clang::QualType) SemaLookup.cpp:0:0
```
## Program slightly reduced:
```
#include <tuple>
#include <iostream>
template <typename F>
auto apply(F&& f) ->
decltype(apply(std::forward<F>(f)))
{
}
template <typename F, typename... Args>
auto apply(F&& f, Args&&... args) ->
decltype(apply(std::forward<F>(f),
std::forward_as_tuple(std::forward<Args>(args)...)))
{
return apply(
std::forward<F>(f)
);
}
int main() {
apply(
[](int x) {
return x;
},
10
);
}
```
Original:
```
#include <tuple>
#include <iostream>
template <typename F, typename S, size_t... Is>
auto apply(F&& f, S&& t, std::index_sequence<Is...> is) ->
decltype(std::apply(std::forward<F>(f), std::forward<S>(t), is...))
{
return std::apply(std::forward<F>(f), std::forward<S>(t), is...);
}
template <typename F, typename... Args>
auto apply(F&& f, Args&&... args) ->
decltype(apply(std::forward<F>(f),
std::forward_as_tuple(std::forward<Args>(args)...),
std::make_index_sequence<sizeof...(Args)>{}))
{
return apply(
std::forward<F>(f),
std::forward_as_tuple(std::forward<Args>(args)...),
std::make_index_sequence<sizeof...(Args)>{}
);
}
int main() {
std::vector<int> vec{1, 2, 3, 4, 5, 6, 7};
apply(
[&vec](int x) {
vec.push_back(x * 2);
},
10
);
}
```
To quickly reproduce:
https://godbolt.org/z/vx3T89eax
![]()
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