On 16/04/2014 18:55, Marco Atzeri wrote:
On 16/04/2014 17:40, Tom Lane wrote:
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The bigger picture though is that this code isn't failing on the
buildfarm. So what we need to ask is what's different about Marco's
machine.
good question.
I checked again and I found that the fault is only on
the cygwin 64 bit build but not on the cygwin 32 bit one.
I was sure to have tested both, but it seems this time
I missed the comparison.
regards, tom lane
Regards
Marco
to close the issue, we have identified the fault in the getaddrinfo
system call on cygwin64.
"What happens is that the field ai_addrlen is defined as socklen_t in
POSIX, but as size_t in the W32 API. On 64 bit, socklen_t is 4 bytes
while size_t is 8 bytes.
Setting all the hintp members manually (in
contrast to calloc'ing it or memset'ing it to 0) leaves the 4 upper
bytes of the ai_addrlen untouched. This in turn leads to a high
probability that ai_addrlen has an invalid value when entering
Winsock's getsockopt."
Regards
Marco
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