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Fix: eliminate compile warning of iteration index(int) undefined behavior #6874

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Merged
mohanchen merged 1 commit into from
Jan 21, 2026
Merged

Fix: eliminate compile warning of iteration index(int) undefined behavior #6874

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4 changes: 2 additions & 2 deletions source/source_hamilt/module_vdw/vdwd2.h
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Original file line number Diff line number Diff line change
Expand Up @@ -36,9 +36,9 @@ class Vdwd2 : public Vdw
int yidx = para_.period().y / 2;
int zidx = para_.period().z / 2;

for (int it1 = 0; it1 != ucell_.ntype; ++it1)
for (int it1 = 0; it1 < ucell_.ntype; ++it1)
{
for (int it2 = 0; it2 != ucell_.ntype; ++it2)
for (int it2 = 0; it2 < ucell_.ntype; ++it2)
{
const double C6_product
= sqrt(para_.C6().at(ucell_.atoms[it1].ncpp.psd) * para_.C6().at(ucell_.atoms[it2].ncpp.psd))
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