Fixed issue with "QGDict::hashAsciiKey: Invalid null key" in pre.l

doxygen · doxygen · commit 15a47ccc703c · 2019-11-16T12:54:42.000+01:00
diff --git a/src/pre.l b/src/pre.l
@@ -2389,6 +2389,10 @@ static void expandExpression(yyscan_t yyscanner,QCString &expr,QCString *rest,in
 {
   YY_EXTRA_TYPE state = preYYget_extra(yyscanner);
   //printf(">expandExpression(expr='%s',rest='%s',pos=%d,level=%d)\n",expr.data(),rest ? rest->data() : 0, pos, level);
+  if (expr.isEmpty())
+  {
+    return;
+  }
   if (state->expansionDict.find(expr)!=0) // check for recursive expansions
   {
     return;

Original file line number	Diff line number	Diff line change
`@@ -2389,6 +2389,10 @@ static void expandExpression(yyscan_t yyscanner,QCString &expr,QCString *rest,in`
`2389`	`2389`	`{`
`2390`	`2390`	`YY_EXTRA_TYPE state = preYYget_extra(yyscanner);`
`2391`	`2391`	`//printf(">expandExpression(expr='%s',rest='%s',pos=%d,level=%d)\n",expr.data(),rest ? rest->data() : 0, pos, level);`
	`2392`	`+ if (expr.isEmpty())`
	`2393`	`+ {`
	`2394`	`+ return;`
	`2395`	`+ }`
`2392`	`2396`	`if (state->expansionDict.find(expr)!=0) // check for recursive expansions`
`2393`	`2397`	`{`
`2394`	`2398`	`return;`