On Mon, Jun 16, 2014 at 12:07:32PM +0900, Masatake YAMATO wrote: > How about x86_64? > > I guess testing on x86_64 is failed, too.
No, on x86_64 the test always succeeds. On armv7hl it is unreliable: sometimes it succeeds (e.g. https://koji.fedoraproject.org/koji/taskinfo?taskID=7043723), sometimes it fails (e.g. https://koji.fedoraproject.org/koji/taskinfo?taskID=7049221), and on my local armv7hl host it always fails with "too many stack frames". > It seems that the libunwind on fedora is not linked to liblzma. > As the result it cannot decode minidebug info. > > https://bugzilla.redhat.com/show_bug.cgi?id=972737 This is not necessarily the root of all problems. > As far as trying with privately built libunwind f1, f0 and main are > decoded expectedly. > > BTW, I'm afraid stack-fcall used in the test is more optimized than I > expected. No, stack-fcall is not overoptimized. I've split stack-fcall.c into several compilation units just to be sure that intermediate function calls are not optimized out (see https://sourceforge.net/p/strace/code/ci/ldv/unwind/~/log/) and made another test build: https://koji.fedoraproject.org/koji/taskinfo?taskID=7049219 You can see that on x86_64 the test succeeded, and on i686 and armv7hl it failed. -- ldv
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