On Thu, 2022-06-16 at 12:13 +0000, Matthias Klose wrote: [...] > In file included from /usr/include/string.h:519, > from mines.c:12: > In function ‘memset’, > inlined from ‘new_game’ at mines.c:2257:2: > /usr/include/x86_64-linux-gnu/bits/string_fortified.h:59:10: error: > ‘__builtin_memset’ specified size between 18446744071562067968 and > 18446744073709551615 exceeds maximum object size 9223372036854775807 > [-Werror=stringop-overflow=] > 59 | return __builtin___memset_chk (__dest, __ch, __len, > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 60 | __glibc_objsize0 (__dest)); > | ~~~~~~~~~~~~~~~~~~~~~~~~~~ > mines.c: In function ‘new_game’: > mines.c:2257:29: note: destination object allocated here > 2257 | memset(state->layout->mines, 0, wh * sizeof(bool)); > | ~~~~~~~~~~~~~^~~~~~~ [...]
This warning is nonsense, isn't it? It's claiming that memset() is the
allocation site. And the length (wh) is the result of multiplying two
integers that have been range-checked (though not in this function).
I should patch out the use of -Werror in this package though.
Ben.
--
Ben Hutchings
The most exhausting thing in life is being insincere.
- Anne Morrow Lindberg
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