avoid potential 32-bit integer overflow

2022-04-29 20:53:57 -04:00
parent cac9fcaf86
commit 9c45af7730
1 changed files with 1 additions and 1 deletions
--- a/src/ELECTRODE/pppm_electrode.cpp
+++ b/src/ELECTRODE/pppm_electrode.cpp
@ -670,7 +670,7 @@ void PPPMElectrode::compute_matrix(bigint *imat, double **matrix, bool timer_fla
  compute(1, 0);

  // fft green's function k -> r
-  std::vector<double> greens_real(nz_pppm * ny_pppm * nx_pppm, 0.);
+  std::vector<double> greens_real((std::size_t) nz_pppm * ny_pppm * nx_pppm, 0.0);
  for (int i = 0, n = 0; i < nfft; i++) {
    work2[n++] = greensfn[i];
    work2[n++] = ZEROF;