https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61577
--- Comment #153 from Peter Bisroev <peter.bisroev at groundlabs dot com> --- Hi Everyone, just wanted to give you an update on where I am at the moment. Unfortunately I did not have much time to dig into this more, but last night while trying to figure out what is causing those ICEs at the end of stage1 I noticed something interesting. All of the below is in reference to gcc 8.3.0 being bootstrapped with 4.7.4. 8.3.0 is patched with the patches from comment#72 and comment #63 as suggested by Dave and EML. Technically these are the subset of the patches provided by the The Written Word. However using the rest of patches from The Written Word's patch set did not seem to make a difference in my testing so far so I am trying to keep the changes to the minimum for the moment (please let me know if this is a wrong approach). We already know that we currently cannot compile stage1 with -O0 as it causes binaries to become huge and we get PCREL21B errors that were already described here from HP's linker. If I compile stage1 with -Os or -O2, I get ICEs at the end of stage1 from cc1 during selftesting. I will look into this more, hopefully tonight, 'make selftest-gdb' is really convenient here. However while digging around selftesting, I noticed if I compile stage1 with -O1, self tests pass without issues. Furthermore, if I run the self test build command: ---------- /home/pbisroev/src/build/./gcc/xgcc \ -B/home/pbisroev/src/build-O1/./gcc/ \ -xc -nostdinc /dev/null -S -o /dev/null \ -fself-test=/home/pbisroev/src/gcc-8.3.0/gcc/testsuite/selftests ---------- With any optimization flag, -O[s012], all self tests pass as long as -O1 is set in STAGE1_CFLAGS. If I then further restrict optimization to -O1 to libraries as well (at least from how it appears to work now), build fails at 'Configuring stage 1 in ia64-hp-hpux11.31/libgcc' while trying to test compile something simple as below: ---------- /* confdefs.h */ #define PACKAGE_NAME "GNU C Runtime Library" #define PACKAGE_TARNAME "libgcc" #define PACKAGE_VERSION "1.0" #define PACKAGE_STRING "GNU C Runtime Library 1.0" #define PACKAGE_BUGREPORT "" #define PACKAGE_URL "http://www.gnu.org/software/libgcc/"; /* end confdefs.h. */ int main () { ; return 0; } ---------- However the above can be compiled with -O0 with the same compiler. So I changed my build line to use -O0 as well: ---------- gmake \ STAGE1_CFLAGS="-D_XOPEN_SOURCE_EXTENDED -g -O1" \ STAGE1_CXXFLAGS="-D_XOPEN_SOURCE_EXTENDED -g -O1" \ STAGE1_TFLAGS='-g -O0 -D_XOPEN_SOURCE_EXTENDED' \ BOOT_CFLAGS='-g -O0 -D_XOPEN_SOURCE_EXTENDED' \ CFLAGS_FOR_TARGET='-g -O0 -D_XOPEN_SOURCE_EXTENDED' bootstrap ---------- And now I get much further, specifically the error I get is ---------- /home/pbisroev/src/build/./gcc/xgcc -shared-libgcc -B/home/pbisroev/src/build/./gcc -nostdinc++ -L/home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/src -L/home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/src/.libs -L/home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/libsupc++/.libs -B/home/pbisroev/local/aCC/32/gcc-8.3.0/ia64-hp-hpux11.31/bin/ -B/home/pbisroev/local/aCC/32/gcc-8.3.0/ia64-hp-hpux11.31/lib/ -isystem /home/pbisroev/local/aCC/32/gcc-8.3.0/ia64-hp-hpux11.31/include -isystem /home/pbisroev/local/aCC/32/gcc-8.3.0/ia64-hp-hpux11.31/sys-include -g -O0 -D_XOPEN_SOURCE_EXTENDED -x c++-header -nostdinc++ -g -O2 -I /home/pbisroev/local/aCC/32/include -I/home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/ia64-hp-hpux11.31 -I/home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include -I/home/pbisroev/src/gcc-8.3.0/libstdc++-v3/libsupc++ -O2 -g -std=gnu++0x /home/pbisroev/src/gcc-8.3.0/libstdc++-v3/include/precompiled/stdc++.h \ -o ia64-hp-hpux11.31/bits/stdc++.h.gch/O2ggnu++0x.gch In file included from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/ios:41, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/istream:38, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/sstream:38, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/complex:45, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/ccomplex:39, from /home/pbisroev/src/gcc-8.3.0/libstdc++-v3/include/precompiled/stdc++.h:52: /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/localefwd.h:113:34: error: macro "isblank" passed 2 arguments, but takes just 1 isblank(_CharT, const locale&); ... In file included from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/basic_ios.h:37, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/ios:44, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/istream:38, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/sstream:38, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/complex:45, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/ccomplex:39, from /home/pbisroev/src/gcc-8.3.0/libstdc++-v3/include/precompiled/stdc++.h:52: /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_facets.h:2644:36: error: expected primary-expression before '>' token { return use_facet<ctype<_CharT> >(__loc).toupper(__c); } ^ /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_facets.h:2644:38: error: expected primary-expression before '>' token { return use_facet<ctype<_CharT> >(__loc).toupper(__c); } ^ /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_facets.h:2644:47: error: request for member 'toupper' in '__loc', which is of non-class type 'const int' { return use_facet<ctype<_CharT> >(__loc).toupper(__c); } ^~~~~~~ /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_facets.h: At global scope: /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_facets.h:2649:31: error: 'locale' does not name a type; did you mean 'localtime'? tolower(_CharT __c, const locale& __loc) ^~~~~~ localtime /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_facets.h: In function '_CharT tolower(_CharT, const int&)': /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_facets.h:2650:14: error: 'use_facet' was not declared in this scope { return use_facet<ctype<_CharT> >(__loc).tolower(__c); } ^~~~~~~~~ /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_facets.h:2650:14: note: suggested alternative: In file included from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_classes.h:851, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/ios_base.h:41, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/ios:42, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/istream:38, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/sstream:38, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/complex:45, from /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/ccomplex:39, from /home/pbisroev/src/gcc-8.3.0/libstdc++-v3/include/precompiled/stdc++.h:52: /home/pbisroev/src/build/ia64-hp-hpux11.31/libstdc++-v3/include/bits/locale_classes.tcc:132:5: note: 'std::use_facet' use_facet(const locale& __loc) ---------- So this is definitely some progress, and I am wondering how far that will get. Has anyone seen these errors before? I will try to look into them more tonight. As a side note, as suggested by The Written Word, I have tried to get 4.9.3 and 4.9.4 building, however I am having similar issues as described above with them as well. So for the moment, as Dave suggested, using 4.7.4 for bootstrapping as it seems to be OK based on the results of 'make check'. Thank you everyone! --peter
