On Thu, 5 Jan 2023 at 10:21, Andreas Schwab <schwab@xxxxxxxxxxxxxx> wrote: > > On Jan 05 2023, Masahiro Yamada wrote: > > > I do not understand why 99cb0d917ffa affected this. > > > > > > I submitted a fix to shoot the error message "discarded section .exit.text" > > > > https://lore.kernel.org/all/20230105031306.1455409-1-masahiroy@xxxxxxxxxx/T/#u > > > > I do not understand the binutils commit either, > > but it might have made something good > > because EXIT_TEXT appears twice, in .exit.text, and /DISCARD/. > > I think the issue is that the introdution of a second /DISCARD/ > directive early in script changes the order of evaluation of the other > /DISCARD/ directive when binutils < 2.36 is used, so that the missing > RUNTIME_DISCARD_EXIT started to become relevant. As long as /DISCARD/ > only appears last, the effect of EXIT_TEXT inside it is always > overridden by its occurence in the .exit.exit output section directive. > When another /DISCARD/ occurs early (and binutils < 2.36 is used) the > effect of EXIT_TEXT inside the second /DISCARD/ (when merged with the > first) overrides its occurence in the .exit.text directive. The > binutils commit changed that because the new /DISCARD/ directive no > longer affects the order of evaluation of the rest of the directives. > Exactly. The binutils change mentions output section merging, which apparently applies to the /DISCARD/ pseudo section as well. However, powerpc was also affected by this, and I suggested another fix in the thread below https://lore.kernel.org/all/20230103014535.GA313835@xxxxxxxxxxxx/
