https://sourceware.org/bugzilla/show_bug.cgi?id=30279
--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Alan Modra <amo...@sourceware.org>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c61b7b7b8ea5e3a55b4642dade4798e5c896df66 commit c61b7b7b8ea5e3a55b4642dade4798e5c896df66 Author: Alan Modra <amo...@gmail.com> Date: Tue Mar 28 20:25:26 2023 +1030 Avoid undefined behaviour in m68hc11 md_begin Given p = A where p is a pointer to some type and A is an array of that type, then the expression p - 1 + 1 evokes undefined behaviour according to the C standard. gcc-13 -fsanitize=address,undefined complains about this, but not where the undefined behaviour actually occurs at tc-m68hc11.c:646. Instead you get an error: "tc-m68hc11.c:708:20: runtime error: store to address 0x62600000016c with insufficient space for an object of type 'int'". Which is a lie. There most definitely is space there. Oh well, diagnostics are sometimes hard to get right. The UB is easy to avoid. PR 30279 * config/tc-m68hc11.c (md_begin): Avoid undefined pointer decrement. Remove unnecessary cast. -- You are receiving this mail because: You are on the CC list for the bug.
