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Fix zero-length write(2).

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Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2010-03-29 10:54:42 -07:00 • committed by Aurelien Jarno
parent c581deda32
commit 3e0650a9c9
1 changed files with 3 additions and 0 deletions
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3
exec.c
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@ -2429,6 +2429,9 @@ int page_check_range(target_ulong start, target_ulong len, int flags)
assert(start < ((abi_ulong)1 << L1_MAP_ADDR_SPACE_BITS));
#endif
if (len == 0) {
return 0;
}
if (start + len - 1 < start) {
/* We've wrapped around. */
return -1;