Qt4-preview-feedback Archive, March 2008
Unchecked null pointer causes crash in QSslCertificate
Message 1 in thread
The following line of code causes a fatal error:
qDebug() << QSslCertificate();
The stack trace of the crash is:
libeay32.dll!015d8d24()
[Frames below may be incorrect and/or missing, no symbols loaded for
libeay32.dll]
QtNetworkd4.dll!q_X509_get_ext_d2i(x509_st * a=0x00000000, int b=85,
int * c=0x00000000, int * d=0x00000000) Line 225 + 0x34 bytes C++
> QtNetworkd4.dll!QSslCertificate::alternateSubjectNames() Line 375 +
0x14 bytes C++
QtNetworkd4.dll!operator<<(QDebug debug={...}, const QSslCertificate
& certificate={...}) Line 765 + 0x55 bytes C++
testclient.exe!TestApplication::run() Line 47 + 0x6e bytes C++
testclient.exe!main(int argc=1, char * * argv=0x01105058) Line 8 +
0x8 bytes C++
testclient.exe!__tmainCRTStartup() Line 582 + 0x19 bytes C
testclient.exe!mainCRTStartup() Line 399 C
kernel32.dll!75c13833()
ntdll.dll!7701a9bd()
(sorry for the nasty msvc output)
QSslCertificate::subjectAlternateNames() calls
STACK *altNames = (STACK *)q_X509_get_ext_d2i(d->x509,
NID_subject_alt_name, 0, 0);
while d->x509 is null, leading to a crash inside qsslsocket_openssl_symbols.cpp.
This has been tested and causes crashes on both windows and linux.
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Message 2 in thread
On Thursday 13 March 2008 01:26:31 optimism_ wrote:
> This has been tested and causes crashes on both windows and linux.
When did this start to happen? Recently as with yesterdays snapshots?
z.
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