New submission from STINNER Victor <vstin...@python.org>:
On RHEL8, gcc (GCC) 8.4.1 20200928 (Red Hat 8.4.1-1) fails to build Python with LTO+PGO: the linker fails with "Dwarf Error". On ~200 builds, the linker error only occurred once (build 279) :-( It sounds really hard to reproduce. I suggest to close the issue as "out of date" if it doesn't come back next weeks. https://buildbot.python.org/all/#/builders/568/builds/279 gcc -pthread -fno-semantic-interposition -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -fprofile-generate -Xlinker -export-dynamic -o Programs/_testembed Programs/_testembed.o libpython3.11.a -lcrypt -lpthread -ldl -lutil -lm -lm /usr/bin/ld: Dwarf Error: Offset (2487097600) greater than or equal to .debug_str size (571933). /usr/bin/ld: Dwarf Error: Could not find abbrev number 12095. Then the linker failed to find many symbols: /tmp/cccV00H7.lto.o: In function `signal_pthread_sigmask': <artificial>:(.text+0x292cbc): undefined reference to `_Py_Sigset_Converter' /tmp/cccV00H7.lto.o: In function `fill_siginfo': <artificial>:(.text+0x2930cb): undefined reference to `_PyLong_FromUid' /tmp/cccV00H7.lto.o: In function `signal_sigwaitinfo': <artificial>:(.text+0x29325e): undefined reference to `_Py_Sigset_Converter' /tmp/cccV00H7.lto.o: In function `signal_sigtimedwait': <artificial>:(.text+0x293566): undefined reference to `_Py_Sigset_Converter' /tmp/cccV00H7.lto.o: In function `signal_sigwait': <artificial>:(.text+0x293af0): undefined reference to `_Py_Sigset_Converter' /tmp/cccV00H7.lto.o: In function `PyUnicode_FSDecoder': <artificial>:(.text+0x315fed): undefined reference to `PyOS_FSPath' /tmp/cccV00H7.lto.o: In function `mkpwent': <artificial>:(.text+0x31a78c): undefined reference to `_PyLong_FromUid' <artificial>:(.text+0x31a7a1): undefined reference to `_PyLong_FromGid' /tmp/cccV00H7.lto.o: In function `pwd_getpwuid': <artificial>:(.text+0x31afb6): undefined reference to `_Py_Uid_Converter' <artificial>:(.text+0x31b1df): undefined reference to `_PyLong_FromUid' /tmp/cccV00H7.lto.o: In function `PyUnicode_FSConverter': <artificial>:(.text+0x349247): undefined reference to `PyOS_FSPath' /tmp/cccV00H7.lto.o: In function `_io_open': <artificial>:(.text+0x38781d): undefined reference to `PyOS_FSPath' /tmp/cccV00H7.lto.o:(.data+0x74528): undefined reference to `PyInit_posix' collect2: error: ld returned 1 exit status make[3]: *** [Makefile:603: python] Error 1 make[3]: *** Waiting for unfinished jobs.... /usr/bin/ld: Dwarf Error: Could not find abbrev number 6864. /tmp/ccMUbctW.lto.o: In function `fill_siginfo': <artificial>:(.text+0x1f010b): undefined reference to `_PyLong_FromUid' /tmp/ccMUbctW.lto.o: In function `signal_sigwait': <artificial>:(.text+0x2a6d80): undefined reference to `_Py_Sigset_Converter' /tmp/ccMUbctW.lto.o: In function `signal_sigwaitinfo': <artificial>:(.text+0x2a821e): undefined reference to `_Py_Sigset_Converter' /tmp/ccMUbctW.lto.o: In function `signal_pthread_sigmask': <artificial>:(.text+0x2b05bc): undefined reference to `_Py_Sigset_Converter' /tmp/ccMUbctW.lto.o: In function `signal_sigtimedwait': <artificial>:(.text+0x2b2536): undefined reference to `_Py_Sigset_Converter' /tmp/ccMUbctW.lto.o: In function `PyUnicode_FSDecoder': <artificial>:(.text+0x30d08d): undefined reference to `PyOS_FSPath' /tmp/ccMUbctW.lto.o: In function `mkpwent': <artificial>:(.text+0x30edac): undefined reference to `_PyLong_FromUid' <artificial>:(.text+0x30edc1): undefined reference to `_PyLong_FromGid' /tmp/ccMUbctW.lto.o: In function `pwd_getpwuid': <artificial>:(.text+0x30f5d6): undefined reference to `_Py_Uid_Converter' <artificial>:(.text+0x30f7ff): undefined reference to `_PyLong_FromUid' /tmp/ccMUbctW.lto.o: In function `PyUnicode_FSConverter': <artificial>:(.text+0x33b157): undefined reference to `PyOS_FSPath' /tmp/ccMUbctW.lto.o: In function `_io_open': <artificial>:(.text+0x377d0d): undefined reference to `PyOS_FSPath' /tmp/ccMUbctW.lto.o:(.data+0x84748): undefined reference to `PyInit_posix' collect2: error: ld returned 1 exit status make[3]: *** [Makefile:744: Programs/_testembed] Error 1 make[3]: Leaving directory '/home/buildbot/buildarea/3.x.cstratak-RHEL8-x86_64.lto-pgo/build' make[2]: *** [Makefile:533: build_all_generate_profile] Error 2 make[2]: Leaving directory '/home/buildbot/buildarea/3.x.cstratak-RHEL8-x86_64.lto-pgo/build' make[1]: *** [Makefile:509: profile-gen-stamp] Error 2 make[1]: Leaving directory '/home/buildbot/buildarea/3.x.cstratak-RHEL8-x86_64.lto-pgo/build' make: *** [Makefile:521: profile-run-stamp] Error 2 program finished with exit code 2 elapsedTime=157.205212 ---------- components: Build messages: 395386 nosy: pablogsal, vstinner priority: normal severity: normal status: open title: AMD64 RHEL8 LTO + PGO 3.x build failed with: /usr/bin/ld: Dwarf Error: Offset (2487097600) greater than or equal to .debug_str size (571933). versions: Python 3.11 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue44358> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com