From: stefan+gkrellm@srcbox.net 
  
 On 9/28/25 07:35, Sandro Tosi wrote: 
 > 
 > hey Stefan, 
 > im posting a recent build log showing the failures when building 
 > gkrellm-2.4.0 with gcc-15.2: https://paste.debian.net/hidden/6601e8a7/ 
 > 
 > Hope this may help with your code changes. 
  
  
 I can actually reproduce it with older clang/gcc via "-std=gnu23". 
  
 The thing with C23 is that the change does not really bring any security 
 to function pointers because in glib/gtk/gkrellm function pointers 
 usually have a "void *data" argument but the callback functions are 
 taking a "SomeStruct *data" instead so virtually every function pointer 
 is cast, thereby hiding incompatibilities the same way as the ancient 
 empty argument syntax. 
  
 I'll see if I can finish gkrellm 2.5.0 in the next 1-2 weeks which fixes 
 this for now by setting a fixed C standard (commit 
 ee3f77a2654578519e9a6b5ea819f73b873fc6f1). 
 Passing a standard via CFLAGS should already work fine for gkrellm 2.4.0 
 as well. 
  
 Regards, 
 Stefan 
  
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