Fix potential type size mismatch through pointers #432
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@rettichschnidi please review. |
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sbertin-telular
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| uint32_t option_number = 0; | ||
| uint32_t option_delta = 0; | ||
| uint32_t option_length = 0; | ||
| uint32_t *x; |
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The casts on line 699 should to be adjusted too.
Rest is looking good to me.
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Amended to fix casts |
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Wait a minute, the casts shouldn't be necessary now. |
size_t can be 64-bits while unsigned int is smaller. This causes issues when option_length is accessed through the pointer x in coap_parse_message(). The option length and delta are at most a 16-bit unsigned integer plus 269 according to RFC 7252. Changing option_number, option_delta, and option_length to uint32_t and x to uint32_t * fixes eclipse-wakaama#429. This also ensures sufficient size even if used on a platform with smaller integers. Signed-off-by: Scott Bertin <sbertin@telular.com>
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Amended to remove unnecessary type casts. |
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size_t can be 64-bits while unsigned int is smaller. This causes issues
when option_length is accessed through the pointer x in
coap_parse_message(). The option length and delta are at most a 16-bit
unsigned integer plus 269 according to RFC 7252. Changing
option_number, option_delta, and option_length to uint32_t and x to
uint32_t * fixes #429. This also ensures sufficient size even if used
on a platform with smaller integers.
Signed-off-by: Scott Bertin sbertin@telular.com