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Fix (unreported) crash in clnors with empty mesh.

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Do not try to allocate zero-size memory from memarena.
This commit is contained in:
Bastien Montagne
2023-03-09 16:34:27 +01:00
parent ebc062191c
commit 15dd622a63
1 changed files with 10 additions and 4 deletions
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14
source/blender/blenkernel/intern/mesh_normals.cc
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@@ -494,10 +494,16 @@ void BKE_lnor_spacearr_init(MLoopNorSpaceArray *lnors_spacearr,
lnors_spacearr->mem = BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE, __func__);
}
mem = lnors_spacearr->mem;
lnors_spacearr->lspacearr = (MLoopNorSpace **)BLI_memarena_calloc(
mem, sizeof(MLoopNorSpace *) * size_t(numLoops));
lnors_spacearr->loops_pool = (LinkNode *)BLI_memarena_alloc(
mem, sizeof(LinkNode) * size_t(numLoops));
if (numLoops > 0) {
lnors_spacearr->lspacearr = (MLoopNorSpace **)BLI_memarena_calloc(
mem, sizeof(MLoopNorSpace *) * size_t(numLoops));
lnors_spacearr->loops_pool = (LinkNode *)BLI_memarena_alloc(
mem, sizeof(LinkNode) * size_t(numLoops));
}
else {
lnors_spacearr->lspacearr = nullptr;
lnors_spacearr->loops_pool = nullptr;
}
lnors_spacearr->spaces_num = 0;
}