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https://src.fedoraproject.org/rpms/coin-or-HiGHS/raw/rawhide/f/coin-or-HiGHS-vector.patch
--- HiGHS-1.11.0/highs/util/HFactor.cpp.orig 2025-06-05 18:22:05.000000000 -0600
+++ HiGHS-1.11.0/highs/util/HFactor.cpp 2025-06-05 19:14:45.464812414 -0600
@@ -450,7 +450,7 @@ HighsInt HFactor::build(HighsTimerClock*
}
// Record the number of entries in the INVERT
- invert_num_el = l_start[num_row] + u_last_p[num_row - 1] + num_row;
+ invert_num_el = l_start[num_row] + (num_row > 0 ? u_last_p[num_row - 1] : 0) + num_row;
kernel_dim -= rank_deficiency;
debugLogRankDeficiency(highs_debug_level, log_options, rank_deficiency,
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