Ticket #2975 (closed Bugs: fixed)

Opened 8 years ago

Last modified 8 years ago

in boost::unordered, incorrect prime_list_template<T>::length

Reported by: Jeffrey Hellrung <jhellrung@…> Owned by: danieljames
Milestone: Boost 1.39.0 Component: unordered
Version: Boost 1.38.0 Severity: Problem
Keywords: Cc:


In boost/unordered/detail/hash_table.hpp, line 89-90, there is the definition

template<typename T> std::ptrdiff_t const prime_list_template<T>::length = 28;

I believe 28 should be 40 (the number of primes in prime_list_template<T>::value[])...? Otherwise, it seems resizing your hash table past 1.5 million buckets does no good...

Sorry if this has already been reported, but I couldn't find anything when searching the bug tracker.


Change History

comment:1 Changed 8 years ago by danieljames

  • Status changed from new to assigned

How embarrasing! Thanks for reporting this.

Duplicates are fine by me, a duplicated bug report is better than no reports. And frankly, if someone had reported this and I hadn't fixed it, I'd deserve much worse.

comment:2 Changed 8 years ago by danieljames

(In [52658]) Fix the length of the prime number list. Refs #2975

comment:3 Changed 8 years ago by danieljames

  • Status changed from assigned to closed
  • Resolution set to fixed

(In [52707]) Last minute merge, remove google analytics script tags and fixes #2975.

Merged revisions 52665,52674 via svnmerge from


r52665 | danieljames | 2009-04-29 22:16:10 +0100 (Wed, 29 Apr 2009) | 1 line

Remove google analytics script tags.


r52674 | danieljames | 2009-04-30 06:10:57 +0100 (Thu, 30 Apr 2009) | 1 line

Fix the prime number list length in unordered.



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