diff --git a/cfg/std.cfg b/cfg/std.cfg
index 392cedc78..2b9b67c98 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -2,6 +2,21 @@
 <def>
   <function name="exit"><noreturn>true</noreturn></function>
   <function name="abort"><noreturn>true</noreturn></function>
+  <function name="abs"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="acos"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="asctime"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="asin"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function> 
+  <function name="atan"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="atan2"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg><arg nr="2"><not-uninit/></arg></function>
+  <function name="atof"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="atoi"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="atol"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="atoll"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="ceil"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="clearerr"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-null/><not-uninit/></arg></function>
+  <function name="cos"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="cosh"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
+  <function name="ctime"><noreturn>false</noreturn><leak-ignore/><arg nr="1"><not-uninit/></arg></function>
   <memory>
     <dealloc>free</dealloc>
 
@@ -108,7 +123,6 @@
   <function name="wcstoull"> <leak-ignore/> <arg nr="3"><valid>0,2-36</valid></arg> </function>
 
 
-  <function name="clearerr"> <noreturn>false</noreturn> <arg nr="1"><not-null/><not-uninit/></arg></function>
   <function name="feof">     <noreturn>false</noreturn> <arg nr="1"><not-null/><not-uninit/></arg></function>
   <function name="ferror">   <noreturn>false</noreturn> <arg nr="1"><not-null/><not-uninit/></arg></function>
   <function name="printf">   <noreturn>false</noreturn> <formatstr/>  <arg nr="1"><formatstr/></arg> <arg nr="any"><not-uninit/></arg> </function>