[Bug 1208386] New: gcc12 LTO embeds temporary filename
http://bugzilla.opensuse.org/show_bug.cgi?id=1208386 Bug ID: 1208386 Summary: gcc12 LTO embeds temporary filename Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: All Status: NEW Severity: Normal Priority: P5 - None Component: Development Assignee: martin.liska@suse.com Reporter: bwiedemann@suse.com QA Contact: qa-bugs@suse.de Found By: Development Blocker: --- While working on reproducible builds for openSUSE, I found that our jhead package varied when compiling with -flto=auto /usr/bin/jhead differs in ELF section .rodata --- old /usr/bin/jhead (objdump) +++ new /usr/bin/jhead (objdump) @@ -11684,7 +11684,7 @@ 2e9d0 73696e66 6f2e6300 6d616b65 726e6f74 sinfo.c.makernot 2e9e0 652e6300 7374645f 6368726f 6d696e61 e.c.std_chromina 2e9f0 6e63655f 7175616e 745f7462 6c002f74 nce_quant_tbl./t - 2ea00 6d702f63 6350416b 4471752e 6c747261 mp/ccPAkDqu.ltra + 2ea00 6d702f63 63456e78 6d316b2e 6c747261 mp/ccEnxm1k.ltra 2ea10 6e73302e 6f007374 645f6c75 6d696e61 ns0.o.std_lumina 2ea20 6e63655f 7175616e 745f7462 6c004b6e nce_quant_tbl.Kn 2ea30 6f776e54 61677300 436f6d6d 616e6453 ownTags.CommandS -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1208386 http://bugzilla.opensuse.org/show_bug.cgi?id=1208386#c1 --- Comment #1 from Bernhard Wiedemann <bwiedemann@suse.com> --- After .o files were compiled with -flto, the linking step produces the randomness: for i in $(seq 4) ; do gcc-12 -Wall -fsanitize=address -o jhead obj/jhead.o obj/jpgfile.o obj/jpgqguess.o obj/paths.o obj/exif.o obj/iptc.o obj/gpsinfo.o obj/makernote.o -lm 2>/dev/null && md5sum jhead ; done 9385fe8d7e32129d29d69a0ecba95cae jhead 0bf0c32be7bbe0b5f7a832c0e1650999 jhead 27bcceed3563ad8e21f8c423acc91561 jhead 89b3c1e7b8a527163d9d57db9c13e9e7 jhead -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1208386 http://bugzilla.opensuse.org/show_bug.cgi?id=1208386#c2 --- Comment #2 from Martin Li��ka <martin.liska@suse.com> --- It comes from AddressSanitizer that generates an artificial global symbol that has location equal to the ltrans unit: $ cat jhead.i int foo; $ gcc -O2 -fsanitize=address -flto=auto jhead.i -shared -fPIC -fdump-tree-all -o jhead --save-temps --verbose ... .LC2: .string "./jhead.ltrans0.o" .section .data.rel,"aw" .align 32 .type .LASAN0.2, @object .size .LASAN0.2, 64 .LASAN0.2: .quad .LASAN1.0 .quad 4 .quad 64 .quad .LC1 .quad .LC2 Anyway. ASAN is not something we should enable for openSUSE packages. It's for development purposes. Lemme fix that. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1208386 http://bugzilla.opensuse.org/show_bug.cgi?id=1208386#c3 --- Comment #3 from Martin Li��ka <martin.liska@suse.com> --- It's something that was removed in the upstream project: https://github.com/Matthias-Wandel/jhead/commit/34f61c3f1408e6b00f6f65dd3d78... -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1208386 http://bugzilla.opensuse.org/show_bug.cgi?id=1208386#c4 Martin Li��ka <martin.liska@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pgajdos@suse.com --- Comment #4 from Martin Li��ka <martin.liska@suse.com> --- SR: https://build.opensuse.org/request/show/1066207 -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1208386 http://bugzilla.opensuse.org/show_bug.cgi?id=1208386#c7 --- Comment #7 from OBSbugzilla Bot <bwiedemann+obsbugzillabot@suse.com> --- This is an autogenerated message for OBS integration: This bug (1208386) was mentioned in https://build.opensuse.org/request/show/1066328 Factory / jhead -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1208386 http://bugzilla.opensuse.org/show_bug.cgi?id=1208386#c8 Martin Li��ka <martin.liska@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=108834 --- Comment #8 from Martin Li��ka <martin.liska@suse.com> --- (In reply to Richard Biener from comment #5)
I think that asan shouldn't get the ltrans name into anything, tracing down where this is created from would be interesting.
It's actually a module name, I filled this: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108834 and I have a patch candidate. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1208386 http://bugzilla.opensuse.org/show_bug.cgi?id=1208386#c9 Martin Li��ka <martin.liska@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #9 from Martin Li��ka <martin.liska@suse.com> --- Anyway, this distro issue is resolved. -- You are receiving this mail because: You are on the CC list for the bug.
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