[Bug c++/14026] std::uncaught_exception is true although there are no uncaught exceptions (rethrow, ghost exception)

["hubert dot schmid at stud dot uka dot de" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From hubert dot schmid at stud dot uka dot de  2004-02-05 10:59 -------
Okay, the command line and compiler output is missing: Here it is. The following
program (same as in original description) does not work with:

/tmp > g++-3.2 -v -Wall bug-ex.cc -o bug-ex
Reading specs from /usr/lib/gcc-lib/i386-linux/3.2.3/specs
Configured with: ../src/configure -v --enable-languages=c,c++,f77,objc,ada
--prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info
--with-gxx-include-dir=/usr/include/c++/3.2 --enable-shared --with-system-zlib
--enable-nls --without-included-gettext --enable-__cxa_atexit
--enable-clocale=gnu --enable-objc-gc i386-linux
Thread model: posix
gcc version 3.2.3 (Debian)
 /usr/lib/gcc-lib/i386-linux/3.2.3/cc1plus -v -D__GNUC__=3 -D__GNUC_MINOR__=2
-D__GNUC_PATCHLEVEL__=3 -D__GXX_ABI_VERSION=102 -D__ELF__ -Dunix -D__gnu_linux__
-Dlinux -D__ELF__ -D__unix__ -D__gnu_linux__ -D__linux__ -D__unix -D__linux
-Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386
-Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i386__ bug-ex.cc -D__GNUG__=3
-D__DEPRECATED -D__EXCEPTIONS -quiet -dumpbase bug-ex.cc -Wall -version -o
/tmp/ccXJp6ZE.s
GNU CPP version 3.2.3 (Debian) (cpplib) (i386 Linux/ELF)
GNU C++ version 3.2.3 (Debian) (i386-linux)
        compiled by GNU C version 3.2.3 (Debian).
ignoring nonexistent directory "/usr/i386-linux/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/3.2
 /usr/include/c++/3.2/i386-linux
 /usr/include/c++/3.2/backward
 /usr/local/include
 /usr/lib/gcc-lib/i386-linux/3.2.3/include
 /usr/include
End of search list.
 as -V -Qy -o /tmp/cc7xIPyK.o /tmp/ccXJp6ZE.s
GNU assembler version 2.14.90.0.7 (i386-linux) using BFD version 2.14.90.0.7
20031029 Debian GNU/Linux
 /usr/lib/gcc-lib/i386-linux/3.2.3/collect2 --eh-frame-hdr -m elf_i386
-dynamic-linker /lib/ld-linux.so.2 -o bug-ex
/usr/lib/gcc-lib/i386-linux/3.2.3/../../../crt1.o
/usr/lib/gcc-lib/i386-linux/3.2.3/../../../crti.o
/usr/lib/gcc-lib/i386-linux/3.2.3/crtbegin.o -L/usr/lib/gcc-lib/i386-linux/3.2.3
-L/usr/lib/gcc-lib/i386-linux/3.2.3/../../.. /tmp/cc7xIPyK.o -lstdc++ -lm
-lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc-lib/i386-linux/3.2.3/crtend.o
/usr/lib/gcc-lib/i386-linux/3.2.3/../../../crtn.o

#include <iostream>
int main()
{
    try {
	throw 1;
    } catch (...) {
	try {
	    throw;
	} catch (...) {
	    std::cout << std::uncaught_exception() << std::endl;
	}
    }
    std::cout << std::uncaught_exception() << std::endl;
}

Wrong output:
1
1
Correct output:
0
0

Same behaviour with gcc 3.3.3 (Debian):

/tmp > g++-3.3 -v -Wall bug-ex.cc -o bug-ex
Reading specs from /usr/lib/gcc-lib/i486-linux/3.3.3/specs
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f77,pascal,objc,ada,treelang --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-gxx-include-dir=/usr/include/c++/3.3 --enable-shared --with-system-zlib
--enable-nls --without-included-gettext --enable-__cxa_atexit
--enable-clocale=gnu --enable-debug --enable-java-gc=boehm
--enable-java-awt=xlib --enable-objc-gc i486-linux
Thread model: posix
gcc version 3.3.3 20040125 (prerelease) (Debian)
 /usr/lib/gcc-lib/i486-linux/3.3.3/cc1plus -quiet -v -D__GNUC__=3
-D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=3 -D_GNU_SOURCE bug-ex.cc -D__GNUG__=3
-quiet -dumpbase bug-ex.cc -auxbase bug-ex -Wall -version -o /tmp/ccSG2PSd.s
GNU C++ version 3.3.3 20040125 (prerelease) (Debian) (i486-linux)
        compiled by GNU C version 3.3.3 20040125 (prerelease) (Debian).
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64471
ignoring nonexistent directory "/usr/i486-linux/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/3.3
 /usr/include/c++/3.3/i486-linux
 /usr/include/c++/3.3/backward
 /usr/local/include
 /usr/lib/gcc-lib/i486-linux/3.3.3/include
 /usr/include
End of search list.
 as -V -Qy -o /tmp/ccQNDRUV.o /tmp/ccSG2PSd.s
GNU assembler version 2.14.90.0.7 (i386-linux) using BFD version 2.14.90.0.7
20031029 Debian GNU/Linux
 /usr/lib/gcc-lib/i486-linux/3.3.3/collect2 --eh-frame-hdr -m elf_i386
-dynamic-linker /lib/ld-linux.so.2 -o bug-ex
/usr/lib/gcc-lib/i486-linux/3.3.3/../../../crt1.o
/usr/lib/gcc-lib/i486-linux/3.3.3/../../../crti.o
/usr/lib/gcc-lib/i486-linux/3.3.3/crtbegin.o -L/usr/lib/gcc-lib/i486-linux/3.3.3
-L/usr/lib/gcc-lib/i486-linux/3.3.3/../../.. /tmp/ccQNDRUV.o -lstdc++ -lm
-lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc-lib/i486-linux/3.3.3/crtend.o
/usr/lib/gcc-lib/i486-linux/3.3.3/../../../crtn.o


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14026