Date: Mon, 17 Jan 2000 21:07:28 -0500 (EST) From: "Alexander N. Kabaev" <kabaev@mail.ru> To: "David O'Brien" <obrien@NUXI.com> Cc: current@FreeBSD.ORG Subject: Re: C++ exceptions doesn't work in shared libraries Message-ID: <XFMail.000117210728.kabaev@mail.ru> In-Reply-To: <20000117115648.C53965@relay.nuxi.com>
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> Why doesn't OpenBSD, Linux, or Solaris x86 need this patch?
I tried to compile and run attached program on dual-processor Compaq
Proliant server running RedHat Linux 6.1 at Compaq testdrive site (thanks,
Compaq!) and guess what? Compiled with -fsjlj-exceptions Linux bails out with
"Not enough memory" error message. Compiled without -fsjlj-exceptions, it dumps
core. It _could_ use some patches after all :)
I would really appreciate if people having access to the OpenBSD/i386
Solaris/x86 boxes will try the following program on these boxes and share
results with us. I will be greatly surprised if OpenBSD will survive the test
since their egcs looks like stock egcs 1.1.2 version which has not been heavily
patched from original Cygnus version.
----------------------------------
E-Mail: Alexander N. Kabaev <kabaev@mail.ru>
Date: 17-Jan-00
Time: 20:30:14
----------------------------------
# This is a shell archive. Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file". Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
# Makefile
# foo.cc
# main.cc
#
echo x - Makefile
sed 's/^X//' >Makefile << 'END-of-Makefile'
XCXX=g++
XLD=ld
XCXXFLAGS=-g -fpic -fexceptions
X
Xall: arf
X
Xarf: main.o foo.so
X ${CXX} -o arf main.o foo.so
X
X
Xfoo.so: foo.o
X ${LD} -Bshareable -o foo.so foo.o
X
Xclean:
X rm -f arf *.o *.so
END-of-Makefile
echo x - foo.cc
sed 's/^X//' >foo.cc << 'END-of-foo.cc'
X#include <stdio.h>
X
Xint Foo ();
X
Xint Baz ()
X{
X char *msg = "Bax thowing...";
X printf ("in baz\n");
X throw msg;
X printf ("baz should not be here.\n");
X}
X
X
Xint Foo ()
X{
X try {
X Baz ();
X } catch (char *msg) {
X printf ("foo caught %s\n", msg);
X }
X}
END-of-foo.cc
echo x - main.cc
sed 's/^X//' >main.cc << 'END-of-main.cc'
X#include <stdio.h>
X
Xint Foo ();
X
Xint
Xmain ()
X{
X try {
X printf ("calling foo\n");
X Foo ();
X printf ("returned from foo\n");
X } catch (char *msg) {
X printf ("exception from foo: %s\n", msg);
X } catch (...) {
X printf ("unknown exception\n");
X }
X}
END-of-main.cc
exit
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