ADDITIONAL SYSTEM INFORMATION :
clang 20 on Linux

A DESCRIPTION OF THE PROBLEM :
With clang 20, resolveFieldEntry.cpp and resolveMethodEntry.cpp break the build with similar warnings:

src/hotspot/share/oops/resolvedFieldEntry.cpp:49:10: error: first argument in call to 'memset' is a pointer to non-trivially copyable type 'ResolvedFieldEntry' [-Werror,-Wnontrivial-memcall]
   49 | memset(this, 0, sizeof(*this));
      | ^
src/hotspot/share/oops/resolvedFieldEntry.cpp:49:10: note: explicitly cast the pointer to silence this warning
   49 | memset(this, 0, sizeof(*this));
      | ^
      | (void*)
src/hotspot/share/oops/resolvedMethodEntry.cpp:43:12: error: first argument in call to 'memset' is a pointer to non-trivially copyable type 'ResolvedMethodEntry' [-Werror,-Wnontrivial-memcall]
   43 | memset(this, 0, sizeof(*this));
      | ^
src/hotspot/share/oops/resolvedMethodEntry.cpp:43:12: note: explicitly cast the pointer to silence this warning
   43 | memset(this, 0, sizeof(*this));
      | ^
      | (void*)
XXXX/src/hotspot/share/oops/resolvedMethodEntry.cpp:48:12: error: first argument in call to 'memset' is a pointer to non-trivially copyable type 'ResolvedMethodEntry' [-Werror,-Wnontrivial-memcall]
   48 | memset(this, 0, sizeof(*this));
      | ^
XXXX/src/hotspot/share/oops/resolvedMethodEntry.cpp:48:12: note: explicitly cast the pointer to silence this warning
   48 | memset(this, 0, sizeof(*this));
      | ^
      | (void*)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Build with --with-toolchain-type=clang when clang is version 20.