Compiling XMail with -Wextra produces this warning:
SysDepUnix.cpp: In function int SysSendFileMMap(SYS_SOCKET, const
char*, SYS_OFF_T, SYS_OFF_T, int):
SysDepUnix.cpp:539: warning: comparison of unsigned expression < 0 is
always false
The affected line is:
if ((iCurrSend = SysSendData(SockFD, pszBuffer, iCurrSend, iTimeout))
< 0) {
The issue is, that SysSendData returns an int, but iCurrSend is of
type size_t and so the negative value will become a positive one and
the errorhandling is never executed.
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