https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109290
lavr at ncbi dot nlm.nih.gov changed:
What |Removed |Added
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CC| |lavr at ncbi dot nlm.nih.gov
--- Comment #4 from lavr at ncbi dot nlm.nih.gov ---
GCC 11.4 produces the same warning on code as simple as this:
char buf[128];
char* c, q;
// buf is filled with some contents from a read()
if (!*(c = buf + strcspn(buf, kDigits)))
return 0;
q = c > buf ? c[-1] : '\0'; // THIS LINE GETS A WARNING
array subscript -1 is outside array bounds of 'char[128]' [-Warray-bounds]
Note that there's an explicit check that c > buf before accessing the index
backwards.
