Hello! While using a GCC 4.5 snapshot the compiler suddenly emitted an error message from emit-rtl.c about a "shared rtx". This error pointed to an instruction I added to the prologue. Now I checked with 4.5.0 final and it compiles without this error message. Since a release has checking disabled, I rebuilt the compiler with "misc,assert" and then 4.5.0-release barfs with the "shared rtx" message. This is surprising for me since if there really is a problem with the added code, 4.5.0-release should catch it as well because emit-rtl.c has a gcc_assert that checks the very same condition that the ENABLE_CHECKING code there is testing. This is the added code which causes the error message: ref = gen_rtx_SYMBOL_REF (Pmode, "symbol"]); insn = gen_elf_high (reg, ref); emit_insn (insn); emit_insn (gen_rtx_USE (VOIDmode, insn)); insn = gen_elf_low (reg, reg, ref); emit_insn (insn); emit_insn (gen_rtx_USE (VOIDmode, insn)); The error message is issued for the rtx_USE instruction(s). Regards, Gunther Nikl
