[lwip-devel] [patch #10088] allow "typedef u32_t mem_size_t" when MEM_SIZE > 640000L and MEM_USE_POOLS

[ODH]

Follow-up Comment #3, patch #10088 (project lwip):

When, for example, you have: MEM_SIZE == 132kB, you then have statements in
mem_init(...) like: "mem->next = MEM_SIZE_ALIGNED;" which is assigning the
value 0x00010000U to a 16-bit variable of type mem_size_t. This is obviously
wrong, and obviously not what the author of the software is expecting to
happen - they were expecting to be able to always fit the value of MEM_SIZE
into a variable of type mem_size_t. This patch corrects this situation for
cases in which MEM_SIZE_ALIGNED is, or is likely to be unable to fit within a
16-bit mem_size_t by using 32-bits for mem_size_t.


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