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Fix integer overflow in HDF5 output #396

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Merged
donnaaboise merged 1 commit into from
Jan 29, 2026
+4 −4
Merged

Fix integer overflow in HDF5 output #396

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8 changes: 4 additions & 4 deletions src/patches/clawpatch/fclaw_clawpatch_output_hdf5.c
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Original file line number Diff line number Diff line change
Expand Up @@ -212,12 +212,12 @@ get_offsets_##TYPE(fclaw_global_t * glob, \
{ \
TYPE * offsets = (TYPE *) buffer; \
\
int num_cells_before; \
TYPE num_cells_before; \
int mx,my,mz,mbc; \
double dx,dy,dz,xlower,ylower,zlower; \
\
int num_patches_before = glob->domain->global_num_patches_before + glob->domain->blocks[blockno].num_patches_before + patchno; \
int num_points_per_cell; \
TYPE num_patches_before = glob->domain->global_num_patches_before + glob->domain->blocks[blockno].num_patches_before + patchno; \
TYPE num_points_per_cell; \
if(fclaw_clawpatch_dim(patch) == 2) \
{ \
fclaw_clawpatch_2d_grid_data(glob,patch,&mx,&my,&mbc,&xlower,&ylower,&dx,&dy); \
Expand All @@ -232,7 +232,7 @@ get_offsets_##TYPE(fclaw_global_t * glob, \
num_cells_before = num_patches_before * mx * my * mz; \
} \
\
int curr_offset = num_cells_before * num_points_per_cell; \
TYPE curr_offset = num_cells_before * num_points_per_cell; \
\
for(int k = 0; k < mz; k++) \
{ \
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