[stacktrace.basic.hash]

# 19 Diagnostics library [[diagnostics]](./#diagnostics)

## 19.6 Stacktrace [[stacktrace]](stacktrace#basic.hash)

### 19.6.6 Hash support [stacktrace.basic.hash]

[🔗](#itemdecl:1)

`template<> struct hash<stacktrace_entry>;
template<class Allocator> struct hash<basic_stacktrace<Allocator>>;
`

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L2405)

The specializations are enabled ([[unord.hash]](unord.hash "22.10.19 Class template hash"))[.](#1.sentence-1)