57     int *ptr, shift;  in PetscMallocAlign()  local
67     shift          = (int)(((PETSC_UINTPTR_T)ptr) % PETSC_MEMALIGN);  in PetscMallocAlign()
68     shift          = (2 * PETSC_MEMALIGN - shift) / sizeof(int);  in PetscMallocAlign()
69     ptr[shift - 1] = shift + SHIFT_CLASSID;  in PetscMallocAlign()
70     ptr += shift;  in PetscMallocAlign()
91     const int shift = *((int *)ptr - 1) - SHIFT_CLASSID;  in PetscFreeAlign()  local
93 …PetscCheck(shift <= PETSC_MEMALIGN - 1, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Likely memory corruption…  in PetscFreeAlign()
94     PetscCheck(shift >= 0, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Likely memory corruption in heap");  in PetscFreeAlign()
95     ptr = (void *)((int *)ptr - shift);  in PetscFreeAlign()
125     int shift = *(((int *)*result) - 1) - SHIFT_CLASSID;  in PetscReallocAlign()  local
126 …PetscCheck(shift <= PETSC_MEMALIGN - 1, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Likely memory corruption…  in PetscReallocAlign()
127     PetscCheck(shift >= 0, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Likely memory corruption in heap");  in PetscReallocAlign()
128     *result = (void *)(((int *)*result) - shift);  in PetscReallocAlign()
141       int shift      = (int)(((PETSC_UINTPTR_T)ptr) % PETSC_MEMALIGN);  in PetscReallocAlign()  local
142       shift          = (2 * PETSC_MEMALIGN - shift) / sizeof(int);  in PetscReallocAlign()
143       ptr[shift - 1] = shift + SHIFT_CLASSID;  in PetscReallocAlign()
144       ptr += shift;  in PetscReallocAlign()