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Full Discussion: is this a bug of g++?
Top Forums Programming is this a bug of g++? Post 302503710 by Corona688 on Friday 11th of March 2011 11:30:30 AM
Old 03-11-2011
It sounds like the same or similar problem as scanf() in C: It throws up on bad data but doesn't actually discard the bad data.

In C the usual approach is to read strings line-by-line with fgets or getline (fgets preferred because there's some very broken getline implementations out there), then feed the line into sscanf. Whether sscanf succeeds or not, the data is out of the input stream and out of your way.

C++ doesn't have special string-only functions, it uses stringstream to make a string act like ss>>var>>var; instead. Whether reading your vars from the string succeeds or not, the data is out of cin and can't come back to haunt you.

Here's an example.
 

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eXosip2 request outside of dialog(3)				    libeXosip2				      eXosip2 request outside of dialog(3)

NAME
eXosip2 request outside of dialog - Functions int eXosip_message_build_request (osip_message_t **message, const char *method, const char *to, const char *from, const char *route) int eXosip_message_send_request (osip_message_t *message) int eXosip_message_build_answer (int tid, int status, osip_message_t **answer) int eXosip_message_send_answer (int tid, int status, osip_message_t *answer) Detailed Description Function Documentation int eXosip_message_build_request (osip_message_t **message, const char *method, const char *to, const char *from, const char *route) Build a default request message. This method will be updated to send any message outside of dialog In this later case, you'll specify the method to use in the second argument. Parameters: message Pointer for the SIP request to build. method request method. (like 'MESSAGE' or 'PING'...) to SIP url for callee. from SIP url for caller. route Route header for request. (optional) int eXosip_message_send_request (osip_message_t *message) Send an request. Parameters: message SIP request to send. int eXosip_message_build_answer (inttid, intstatus, osip_message_t **answer) Build answer for a request. Parameters: tid id of transaction. status status for SIP answer to build. answer The SIP answer to build. int eXosip_message_send_answer (inttid, intstatus, osip_message_t *answer) Send answer for a request. Parameters: tid id of transaction. status status for SIP answer to send. answer The SIP answer to send. (default will be sent if NULL) Author Generated automatically by Doxygen for libeXosip2 from the source code. Version 3.1.0 Sun Jun 24 2012 eXosip2 request outside of dialog(3)
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