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From: "mhp77 at gmx dot at" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/48876] New: ICE when initializing character variable with zero-length string
Date: Wed, 04 May 2011 20:58:00 -0000 [thread overview]
Message-ID: <bug-48876-4@http.gcc.gnu.org/bugzilla/> (raw)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48876
Summary: ICE when initializing character variable with
zero-length string
Product: gcc
Version: 4.6.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: mhp77@gmx.at
The following Fortran program compiles without errors:
program test
character :: string = "string"( : 0 )
end program test
On the other hand, compiling the semantically equivalent program
program test
character :: string = "string"( : - 1 )
end program test
leads to an internal compiler error. Interestingly, if the ending point of the
substring is less than -2 the internal compiler error turns into an "out of
memory" error.
$ gfortran-4.6 -v -c test.f90
Using built-in specs.
COLLECT_GCC=gfortran-4.6
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6.1/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.6.0-2'
--with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr
--program-suffix=-4.6 --enable-shared --enable-multiarch
--enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--enable-plugin --enable-gold --enable-ld=default --with-plugin-ld
--enable-objc-gc --with-arch-32=i586 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.6.1 20110329 (prerelease) (Debian 4.6.0-2)
COLLECT_GCC_OPTIONS='-v' '-c' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951 test.f90 -quiet -dumpbase test.f90
-mtune=generic -march=x86-64 -auxbase test -version -fintrinsic-modules-path
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/finclude -o /tmp/ccWeUXPn.s
GNU Fortran (Debian 4.6.0-2) version 4.6.1 20110329 (prerelease)
(x86_64-linux-gnu)
compiled by GNU C version 4.6.1 20110329 (prerelease), GMP version 5.0.1, MPFR
version 3.0.0-p8, MPC version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU Fortran (Debian 4.6.0-2) version 4.6.1 20110329 (prerelease)
(x86_64-linux-gnu)
compiled by GNU C version 4.6.1 20110329 (prerelease), GMP version 5.0.1, MPFR
version 3.0.0-p8, MPC version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
*** glibc detected *** /usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951: malloc():
smallbin double linked list corrupted: 0x0000000001e98f50 ***
======= Backtrace: =========
/lib/libc.so.6(+0x71ad6)[0x2b666912bad6]
/lib/libc.so.6(+0x753ed)[0x2b666912f3ed]
/lib/libc.so.6(__libc_malloc+0x70)[0x2b6669130930]
/lib/libc.so.6(+0x2f682)[0x2b66690e9682]
/lib/libc.so.6(+0x2d8b5)[0x2b66690e78b5]
/lib/libc.so.6(+0x2d1a0)[0x2b66690e71a0]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951[0x7b07c1]
/lib/libc.so.6(+0x321e0)[0x2b66690ec1e0]
/lib/libc.so.6(memcpy+0x2eb)[0x2b6669139a3b]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951(gfc_simplify_expr+0x213)[0x4e0273]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951[0x4df07e]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951(gfc_reduce_init_expr+0x78)[0x4df8f8]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951(gfc_match_init_expr+0x5a)[0x4df95a]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951(gfc_match_data_decl+0xde4)[0x4d28b4]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951[0x51609a]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951[0x51680a]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951[0x517d35]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951[0x5190e5]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951[0x51a799]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951(gfc_parse_file+0x3ff)[0x51b6df]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951[0x554136]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951(toplev_main+0xd82)[0x7b2752]
/lib/libc.so.6(__libc_start_main+0xfd)[0x2b66690d8c4d]
/usr/lib/gcc/x86_64-linux-gnu/4.6.1/f951[0x4b5319]
======= Memory map: ========
...
f951: internal compiler error: Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions.
next reply other threads:[~2011-05-04 20:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-04 20:58 mhp77 at gmx dot at [this message]
2011-05-04 21:22 ` [Bug fortran/48876] " mhp77 at gmx dot at
2011-07-24 2:04 ` pinskia at gcc dot gnu.org
2011-07-30 9:56 ` tkoenig at gcc dot gnu.org
2011-07-30 18:18 ` tkoenig at gcc dot gnu.org
2011-07-30 21:33 ` tkoenig at gcc dot gnu.org
2011-07-30 22:59 ` tkoenig at gcc dot gnu.org
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