in ILRepack/PlatformFixer.cs [203:214]
private void FixPlatformVersion(GenericParameter gp)
{
if (gp.HasConstraints)
foreach (GenericParameterConstraint tr in gp.Constraints)
FixPlatformVersion(tr);
if (gp.HasCustomAttributes)
foreach (CustomAttribute ca in gp.CustomAttributes)
FixPlatformVersion(ca);
if (gp.HasGenericParameters)
foreach (GenericParameter gp1 in gp.GenericParameters)
FixPlatformVersion(gp1);
}