division crashed "bad allocation" #2850

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1. Alex-PLACET commented on May 5, 2026

   

   Alex-PLACET

   on May 5, 2026

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   I tried to reproduce the issue with this test:

   TEST_CASE("divide_4d")
   {
       using T4 = xt::xtensor<float, 4, xt::layout_type::row_major>;
       using shape_type = typename T4::shape_type;
   
       shape_type shape = {2, 3, 2, 2};
       T4 a(shape, 4.5f);
       T4 b(shape, 1.3f);
   
       EXPECT_EQ((a / b)(0, 0, 0, 0), a(0, 0, 0, 0) / b(0, 0, 0, 0));
   
       float sb = 1.2f;
       EXPECT_EQ((a / sb)(0, 0, 0, 0), a(0, 0, 0, 0) / sb);
   
       float sa = 4.6f;
       EXPECT_EQ((sa / b)(0, 0, 0, 0), sa / b(0, 0, 0, 0));
   
       // self-divide assignment: a = a / b (no zeros in b)
       auto a_before = a(1, 2, 1, 1);
       a = a / b;
       EXPECT_EQ(a(1, 2, 1, 1), a_before / b(1, 2, 1, 1));
   }

   I don't reproduce the issue.
   Can you give me your environment ?
2. Alex-PLACET

   added

   Bug

   on May 13, 2026