diff --git a/cfg/std.cfg b/cfg/std.cfg
index 6e4f5acdf..111752e11 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -2711,7 +2711,7 @@
   <!-- long long int scalbln(double x, long int n); -->
   <!-- long long int scalblnf(float x, long int n); -->
   <!-- long long int scalblnl(long double x, long int n); -->
-  <function name="scalbn,scalbnf,scalbnl,scalbln,scalblnf,scalblnl">
+  <function name="scalbn,std::scalbn,scalbnf,std::scalbnf,scalbnl,std::scalbnl,scalbln,std::scalbln,scalblnf,std::scalblnf,scalblnl,std::scalblnl">
     <use-retval/>
     <pure/>
     <noreturn>false</noreturn>
@@ -2724,7 +2724,7 @@
     </arg>
   </function>
   <!-- int signbit(double x); -->
-  <function name="signbit">
+  <function name="signbit,std::signbit">
     <use-retval/>
     <pure/>
     <noreturn>false</noreturn>
@@ -2734,13 +2734,13 @@
     </arg>
   </function>
   <!-- void (*signal(int sig, void (*func)(int)))(int); -->
-  <function name="signal">
+  <function name="signal,std::signal">
     <arg nr="1">
       <not-uninit/>
     </arg>
   </function>
   <!-- int raise(int sig); -->
-  <function name="raise">
+  <function name="raise,std::raise">
     <arg nr="1">
       <not-uninit/>
     </arg>
diff --git a/test/cfg/std.c b/test/cfg/std.c
index d5b05c465..f9f35fdbd 100644
--- a/test/cfg/std.c
+++ b/test/cfg/std.c
@@ -2659,3 +2659,61 @@ void uninitvar_round(void)
     // cppcheck-suppress uninitvar
     (void)roundl(ld);
 }
+
+void uninivar_scalbn(void)
+{
+    float f;
+    int i1;
+    // cppcheck-suppress uninitvar
+    (void)scalbnf(f,i1);
+
+    double d;
+    int i2;
+    // cppcheck-suppress uninitvar
+    (void)scalbn(d,i2);
+
+    long double ld;
+    int i3;
+    // cppcheck-suppress uninitvar
+    (void)scalbnl(ld,i3);
+}
+
+void uninivar_scalbln(void)
+{
+    float f;
+    long int i1;
+    // cppcheck-suppress uninitvar
+    (void)scalblnf(f,i1);
+
+    double d;
+    long int i2;
+    // cppcheck-suppress uninitvar
+    (void)scalbln(d,i2);
+
+    long double ld;
+    long int i3;
+    // cppcheck-suppress uninitvar
+    (void)scalblnl(ld,i3);
+}
+
+void uninitvar_signbit(void)
+{
+    double d;
+    // cppcheck-suppress uninitvar
+    (void)signbit(d);
+}
+#if 0
+void uninivar_signal(void)
+{
+    int i;
+    // cppcheck-suppress uninitvar
+    signal(i, exit);
+}
+
+void uninivar_raise(void)
+{
+    int i;
+    // cppcheck-suppress uninitvar
+    (void)raise(i);
+}
+#endif
diff --git a/test/cfg/std.cpp b/test/cfg/std.cpp
index 28800c001..3b8eea55f 100644
--- a/test/cfg/std.cpp
+++ b/test/cfg/std.cpp
@@ -1981,3 +1981,62 @@ void uninitvar_round(void)
     // cppcheck-suppress uninitvar
     (void)std::roundl(ld);
 }
+
+void uninivar_scalbn(void)
+{
+    float f;
+    int i1;
+    // cppcheck-suppress uninitvar
+    (void)std::scalbnf(f,i1);
+
+    double d;
+    int i2;
+    // cppcheck-suppress uninitvar
+    (void)std::scalbn(d,i2);
+
+    long double ld;
+    int i3;
+    // cppcheck-suppress uninitvar
+    (void)std::scalbnl(ld,i3);
+}
+
+void uninivar_scalbln(void)
+{
+    float f;
+    long int i1;
+    // cppcheck-suppress uninitvar
+    (void)std::scalblnf(f,i1);
+
+    double d;
+    long int i2;
+    // cppcheck-suppress uninitvar
+    (void)std::scalbln(d,i2);
+
+    long double ld;
+    long int i3;
+    // cppcheck-suppress uninitvar
+    (void)std::scalblnl(ld,i3);
+}
+
+void uninitvar_signbit(void)
+{
+    double d;
+    // cppcheck-suppress uninitvar
+    (void)std::signbit(d);
+}
+
+#if 0
+void uninivar_signal(void)
+{
+    int i;
+    // cppcheck-suppress uninitvar
+    std::signal(i, exit);
+}
+
+void uninivar_raise(void)
+{
+    int i;
+    // cppcheck-suppress uninitvar
+    (void)std::raise(i);
+}
+#endif