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Diffstat (limited to 'src/common/weighted_shuffle.h')
| -rw-r--r-- | src/common/weighted_shuffle.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/common/weighted_shuffle.h b/src/common/weighted_shuffle.h index 10def0a01..dd8f22da0 100644 --- a/src/common/weighted_shuffle.h +++ b/src/common/weighted_shuffle.h @@ -14,6 +14,8 @@ void weighted_shuffle(RandomIt first, RandomIt last, { if (first == last) { return; + } else if (std::accumulate(weight_first, weight_last, 0) == 0) { + return; } else { std::discrete_distribution d{weight_first, weight_last}; if (auto n = d(g); n > 0) { |