where to discuss problems with IEEE 754 standard on x86 architecture?

[Petr Savicky <savicky@cs.cas.cz>]

Can anybody help me to find the right place to discuss the problems
related to IEEE 754 standard for floating point numbers on x86 (IA-32)?

The following code
  #include <stdio.h>
  
  int main(int argc, char *argv[]) {
      double x,y,z,m=1.0;
      for (int i=0; i<52; i++) { m *= 2.0; }
  
      x = 1.5 - 1.0/4096.0 - 1.0/m;
      y = 1.5 - 1.0/4096.0;
  
      z = 1.0 + 1.0/m*x;
      printf("%f\n",m*(z-1.0));
  
      z = 1.0 + 1.0/m*y;
      printf("%f\n",m*(z-1.0));
  }
produces output
  1.000000
  2.000000
on x86 (IA-32) processor. In my opinion, this implies that IA-32 processor
does not follow IEEE 754 exactly, since the closest representable
value to both 1.0 + 1.0/m*x and 1.0 + 1.0/m*y is z = 1.0 + 1.0/m
and not z = 1.0 + 2.0/m, which is obtained in the second case.

Am I right? If yes, I think that the problem is known. Are there web
pages or other resources on this problem?

Thank you very much for any information.

All the best, Petr.