[Bug debug/50203] ICE: in output_loc_list, at dwarf2out.c:8188 with --param max-vartrack-expr-depth=140
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50203 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||DUPLICATE --- Comment #5 from Andrew Pinski 2012-01-19 05:47:40 UTC --- This is basically a dup of bug 51695 because that is also a >= 64KB expression. *** This bug has been marked as a duplicate of bug 51695 ***
[Bug debug/50203] ICE: in output_loc_list, at dwarf2out.c:8188 with --param max-vartrack-expr-depth=140
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50203 --- Comment #4 from Richard Guenther 2011-08-29 11:05:19 UTC --- (In reply to comment #3) > But what would be a good limit for the parameter? On some targets some people > have managed to trigger it even with the parameter 20 which has been the > default for a while, but on other code/targets even a few hundred is fine. > As I wrote on gcc-patches I think, what we could do is just drop the > expression > on the floor instead of asserting if it is >= 64KB, or we could stick it into > a > DW_TAG_dwarf_procedure (though, I think >= 64KB location expressions ought to > be rarely useful). I suppose we can't know in advance and turn the max-vartrack-expr-depth param into a max-dwarf2-expr-size param? That we could limit to 64kb ...
[Bug debug/50203] ICE: in output_loc_list, at dwarf2out.c:8188 with --param max-vartrack-expr-depth=140
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50203 --- Comment #3 from Jakub Jelinek 2011-08-29 10:48:39 UTC --- But what would be a good limit for the parameter? On some targets some people have managed to trigger it even with the parameter 20 which has been the default for a while, but on other code/targets even a few hundred is fine. As I wrote on gcc-patches I think, what we could do is just drop the expression on the floor instead of asserting if it is >= 64KB, or we could stick it into a DW_TAG_dwarf_procedure (though, I think >= 64KB location expressions ought to be rarely useful).
[Bug debug/50203] ICE: in output_loc_list, at dwarf2out.c:8188 with --param max-vartrack-expr-depth=140
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50203 --- Comment #2 from Richard Guenther 2011-08-29 10:12:00 UTC --- Shouldn't we limit the max of the param then?
[Bug debug/50203] ICE: in output_loc_list, at dwarf2out.c:8188 with --param max-vartrack-expr-depth=140
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50203 Jakub Jelinek changed: What|Removed |Added CC||aoliva at gcc dot gnu.org, ||jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek 2011-08-29 09:08:45 UTC --- DWARF has a fixed limit for the size of expression in .debug_loc - 64KB, so with insane high parameters you can trigger it.
