This warning is emitted in line 648 of file gas/config/tc-avr.c. This warning has been confusing a lot of users in the past, because it is ultimately generated for legitimate assembly code generated by GCC as part of jump tables resulting out of a larger switch statement.
Discussion with the author of the atmega256x patch, Björn Haase, resulted in an agreement that the warning should just be removed. There is indeed a minimal danger that a switch statement could cross an 128 KiB boundary where a linker stub could suddenly be placed within the table, but as the assembler cannot reliably detect this situation at all, it confuses more people with legitimate code (not crossing a 128 KiB boundary) than it would be really able to help out those who are in danger. In the end, the users are told to ignore the warning, so it doesn't do any good at all. In addition, Björn pointed out that it could only detect part of the problem but is not able to cover all possible dangerous cases, because some code might hide dangerous operations between other assembly code that is not covered by the warning. If at all, this warning needs to be emitted by GCC itself whenever it generates the possibly dangerous code. -- Summary: Confusing warning: "expression dangerous with linker stubs" Product: binutils Version: 2.18 Status: NEW Severity: normal Priority: P2 Component: gas AssignedTo: unassigned at sources dot redhat dot com ReportedBy: j at uriah dot heep dot sax dot de CC: bug-binutils at gnu dot org GCC target triplet: avr-*-* http://sourceware.org/bugzilla/show_bug.cgi?id=5523 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-binutils