X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Ffunction.pl;h=1ca923d462fb9556442434612e0c9f9c3d6bee3e;hp=07e82e19d2578c73e6c10e3e9cf76caa6a60e797;hb=c0fcba137d26486085ed5d4104b34d2c44978693;hpb=ff8b400eb500618644231ed9e6f199c3b0b25135

diff --git a/ginac/function.pl b/ginac/function.pl
index 07e82e19..1ca923d4 100644
--- a/ginac/function.pl
+++ b/ginac/function.pl
@@ -536,7 +536,6 @@ public:
 	static unsigned register_new(function_options const & opt);
 	static unsigned current_serial;
 	static unsigned find_function(const std::string &name, unsigned nparams);
-	static std::vector<function_options> get_registered_functions() { return registered_functions(); };
 	unsigned get_serial() const {return serial;}
 	std::string get_name() const;
 
@@ -844,6 +843,9 @@ function::function(unsigned ser, const exprseq & es) : exprseq(es), serial(ser)
 function::function(unsigned ser, const exvector & v, bool discardable) 
   : exprseq(v,discardable), serial(ser)
 {
+	if ( ser >= registered_functions().size() ) {
+		throw std::runtime_error("function does not exist");
+	}
 }
 
 function::function(unsigned ser, std::auto_ptr<exvector> vp) 
@@ -1389,7 +1391,9 @@ unsigned function::find_function(const std::string &name, unsigned nparams)
 /** Return the print name of the function. */
 std::string function::get_name() const
 {
-	GINAC_ASSERT(serial<registered_functions().size());
+	if ( serial >= registered_functions().size() ) {
+		throw std::runtime_error("unknown function");
+	}
 	return registered_functions()[serial].name;
 }