Fixing string attribute behavior when the lib3270's response is "null".

Perry Werneck
1 parent 526082bc
Showing 1 changed file with 4 additions and 0 deletions Show diff stats
client/src/session/local/attribute.cc
@@ -196,11 +196,15 @@
  
 			get.asString = [](const Attribute & attr, const void *worker) {
  
+				errno = 0;
+
 				const struct Worker * w = (const struct Worker *) worker;
 				const char * str = w->methods->get(w->hSession);
  
 				if(str) {
 					return string(str);
+				} else if(!errno) {
+					return string();
 				}
 				throw std::system_error(errno, std::system_category());
...	...	@@ -196,11 +196,15 @@
196	196
197	197	get.asString = [](const Attribute & attr, const void *worker) {
198	198
	199	+ errno = 0;
	200	+
199	201	const struct Worker * w = (const struct Worker *) worker;
200	202	const char * str = w->methods->get(w->hSession);
201	203
202	204	if(str) {
203	205	return string(str);
	206	+ } else if(!errno) {
	207	+ return string();
204	208	}
205	209	throw std::system_error(errno, std::system_category());
206	210
...	...