Re: exception problem with cygwin - terminate called recursively
Philipp Kraus <philipp.kraus@flashpixx.de> wrote in
news:ivt669$6tv$1@online.de:
The original excerpt of the method is:
xmlResetLastError();
bool l_error = false;
xmlGenericErrorFunc l_fptr = myclass::XMLErrorFunction; <=
XMLErrorFunction is a static
method of the class which is empty to supress
parsing content on the CLI
initGenericErrorDefaultFunc( &l_fptr );
initGenericErrorDefaultFunc() expects a normal function pointer, using a
static class method is formally UB, though it works in most
implementations.
So myclass::XMLErrorFunction() is empty as you claim. Have you put some
debug output there to see if it is really called or not.
const char* l_xmlcontent = p_xml.c_str();
xmlDocPtr l_xml = xmlParseMemory( l_xmlcontent,
strlen(l_xmlcontent) );
if ((!l_xml) || (xmlGetLastError())) {
if (l_xml)
xmlFreeDoc( l_xml );
xmlCleanupParser();
throw std::runtime_error("XML data can not be parsed");
<=
this exception is thrown, but can not be caught /
here I have tested with std::exception,
derivated exceptions...
}
According to your descriptions (still no compilable code!) there is
nothing to do with libxml2. You just throw an exception in one function
and attempt to catch it in the immediate caller function. If this does
not work, this probably means that your program state is fully corrupt,
or that you do something else illegal.
Are you sure this is the only exception being thrown? Set a breakpoint on
throw (should be 'catch throw' or 'break __cxa_throw' in gdb) and make
sure the excptions occur there where you think.
On Windows (g++ under Cygwin) the exception is thrown (checked with
gdb) but not caught. Windows creates the message:
terminate called after throwing an instance of <exception> terminate
called recursively
I think such error message typically means that an exception is thrown
while the call stack is being unwind as a result of another exception
throw. In your example code there is only one throw, so I guess the error
is in the code you have left out from the example. Please post a
compilable example demonstrating the problem
(http://www.parashift.com/c++-faq-lite/how-to-post.html#faq-5.8)
p.