https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35179
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |INVALID
--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #8)
> (In reply to Eric Gallager from comment #7)
> > (In reply to Radu Hociung from comment #6)
> > > Comment on attachment 17939 [details]
> > > Improved hello-test case showing working and failing command lines, with
> > > Makefile
> > >
> > > Works as expected:
> > > gcc -g -o hello-exec hellomain.o -L. -lhello
> > >
> > > Triggers the bug:
> > > gcc -g -static -o hello-exec-gccbug35179 hellomain.o -shared -L. -lhello
> > > -v
> >
> > Testcase fails to link for me on Darwin due to a difference in linkers:
> >
> > $ make hello-exec-gccbug35179
> > /usr/local/bin/gcc -o hellomain.o -c -g hellomain.c
> > hellomain.c: In function ‘main’:
> > hellomain.c:9:2: warning: implicit declaration of function ‘exit’
> > [-Wimplicit-function-declaration]
> > exit(0);
> > ^~~~
> > hellomain.c:9:2: warning: incompatible implicit declaration of built-in
> > function ‘exit’
> > hellomain.c:9:2: note: include ‘<stdlib.h>’ or provide a declaration of
> > ‘exit’
> > /usr/local/bin/gcc -o hello_.o -g -c -fpic -DPIC hello.c
> > /usr/local/bin/gcc -o libhello.so -shared -g hello_.o
> > echo Linking with both -static and -shared flags exposes the bug.
> > Linking with both -static and -shared flags exposes the bug.
> > /usr/local/bin/gcc -g -static -o hello-exec-gccbug35179 hellomain.o -shared
> > -L. -lhello -v
> > Using built-in specs.
> > COLLECT_GCC=/usr/local/bin/gcc
> > COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/i386-apple-darwin9.8.0/8.0.0/lto-
> > wrapper
> > Target: i386-apple-darwin9.8.0
> > Configured with: ../configure --disable-werror --disable-werror-always
> > --enable-languages=c,c++,lto,objc,obj-c++
> > --enable-stage1-checking=release,rtl -C --with-system-libunwind
> > --enable-secureplt --enable-frame-pointer --enable-debug --with-isl
> > --disable-host-shared --enable-maintainer-mode --disable-default-pie
> > --with-ld64 --without-pic --enable-target-optspace CC=/usr/local/bin/gcc
> > CXX=/usr/local/bin/g++ AUTOCONF=/usr/local/bin/autoconf
> > AUTOHEADER=/usr/local/bin/autoheader AUTORECONF=/usr/local/bin/autoreconf
> > AUTOM4TE=/usr/local/bin/autom4te AUTOSCAN=/usr/local/bin/autoscan
> > AUTOUPDATE=/usr/local/bin/autoupdate IFNAMES=/usr/local/bin/ifnames
> > Thread model: posix
> > gcc version 8.0.0 20170702 (experimental) (GCC)
> > COMPILER_PATH=/usr/local/libexec/gcc/i386-apple-darwin9.8.0/8.0.0/:/usr/
> > local/libexec/gcc/i386-apple-darwin9.8.0/8.0.0/:/usr/local/libexec/gcc/i386-
> > apple-darwin9.8.0/:/usr/local/lib/gcc/i386-apple-darwin9.8.0/8.0.0/:/usr/
> > local/lib/gcc/i386-apple-darwin9.8.0/
> > LIBRARY_PATH=/usr/local/lib/gcc/i386-apple-darwin9.8.0/8.0.0/:/usr/local/lib/
> > gcc/i386-apple-darwin9.8.0/8.0.0/../../../
> > COLLECT_GCC_OPTIONS='-g' '-static' '-o' 'hello-exec-gccbug35179' '-L.' '-v'
> > '-mmacosx-version-min=10.5.8' '-asm_macosx_version_min=10.5' '-mtune=core2'
> > '-Zdynamiclib'
> > /usr/local/libexec/gcc/i386-apple-darwin9.8.0/8.0.0/collect2 -static -dylib
> > -arch i386 -macosx_version_min 10.5.8 -weak_reference_mismatches non-weak -o
> > hello-exec-gccbug35179 -ldylib1.10.5.o -L.
> > -L/usr/local/lib/gcc/i386-apple-darwin9.8.0/8.0.0
> > -L/usr/local/lib/gcc/i386-apple-darwin9.8.0/8.0.0/../../.. hellomain.o
> > -lhello -lgcc_eh -lgcc -v -idsym
> > collect2 version 8.0.0 20170702 (experimental)
> > /usr/bin/ld -static -dylib -arch i386 -macosx_version_min 10.5.8
> > -weak_reference_mismatches non-weak -o hello-exec-gccbug35179
> > -ldylib1.10.5.o -L. -L/usr/local/lib/gcc/i386-apple-darwin9.8.0/8.0.0
> > -L/usr/local/lib/gcc/i386-apple-darwin9.8.0/8.0.0/../../.. hellomain.o
> > -lhello -lgcc_eh -lgcc -v
> > Apple Computer, Inc. version cctools-698.1~1
> > ld_classic: incompatible flag -dylib used (must specify "-dynamic" to be
> > used)
> > collect2: error: ld returned 1 exit status
> > make: *** [hello-exec-gccbug35179] Error 1
> > $
> >
> > Someone running GNU/Linux will have to try the testcase to move this out of
> > WAITING.
>
> Now that I have access to the GCC compile farm, the testcase still fails on
> me when I try it there:
"fails" as in "doesn't link" before it even gets to the crashes part. I guess
since it's been in WAITING with no response for so long I'll close this as
INVALID.
