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git://git.sv.gnu.org/coreutils.git
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Jim Meyering
1f3e964802
* tests/check.mk (TESTS_ENVIRONMENT): Source lang-default here, ... ... rather than in each of 100+ test scripts. * tests/chgrp/basic: * tests/chgrp/no-x: * tests/chmod/c-option: * tests/chmod/no-x: * tests/chmod/setgid: * tests/chmod/thru-dangling: * tests/chmod/umask-x: * tests/chmod/usage: * tests/chown/basic: * tests/chown/deref: * tests/chown/preserve-root: * tests/cp/abuse: * tests/cp/acl: * tests/cp/backup-is-src: * tests/cp/cp-a-selinux: * tests/cp/cp-i: * tests/cp/cp-mv-backup: * tests/cp/deref-slink: * tests/cp/fail-perm: * tests/cp/into-self: * tests/cp/link-preserve: * tests/cp/preserve-gid: * tests/cp/same-file: * tests/cp/slink-2-slink: * tests/cp/special-f: * tests/cp/symlink-slash: * tests/cp/thru-dangling: * tests/du/basic: * tests/du/hard-link: * tests/du/inacc-dest: * tests/du/long-sloop: * tests/du/no-x: * tests/install/basic-1: * tests/ln/hard-backup: * tests/ln/sf-1: * tests/ls/file-type: * tests/ls/infloop: * tests/ls/nameless-uid: * tests/ls/rt-1: * tests/ls/stat-failed: * tests/ls/symlink-slash: * tests/ls/x-option: * tests/misc/chcon: * tests/misc/chcon-fail: * tests/misc/csplit: * tests/misc/df-P: * tests/misc/groups-dash: * tests/misc/groups-version: * tests/misc/nohup: * tests/misc/printf-surprise: * tests/misc/runcon-no-reorder: * tests/misc/selinux: * tests/misc/split-a: * tests/misc/split-fail: * tests/misc/tac-continue: * tests/misc/wc-files0: * tests/mkdir/p-v: * tests/mkdir/selinux: * tests/mv/acl: * tests/mv/backup-dir: * tests/mv/backup-is-src: * tests/mv/childproof: * tests/mv/diag: * tests/mv/dir2dir: * tests/mv/dup-source: * tests/mv/force: * tests/mv/hard-link-1: * tests/mv/hard-verbose: * tests/mv/i-2: * tests/mv/i-3: * tests/mv/i-4: * tests/mv/i-5: * tests/mv/i-link-no: * tests/mv/into-self: * tests/mv/into-self-2: * tests/mv/into-self-3: * tests/mv/mv-special-1: * tests/mv/part-fail: * tests/mv/part-symlink: * tests/mv/partition-perm: * tests/mv/perm-1: * tests/mv/reply-no: * tests/mv/sticky-to-xpart: * tests/mv/update: * tests/rm/cycle: * tests/rm/dir-no-w: * tests/rm/dir-nonrecur: * tests/rm/fail-2eperm: * tests/rm/fail-eacces: * tests/rm/inaccessible: * tests/rm/interactive-always: * tests/rm/interactive-once: * tests/rm/isatty: * tests/rm/one-file-system: * tests/rm/r-1: * tests/rm/r-2: * tests/rm/rm1: * tests/rm/rm2: * tests/rm/rm3: * tests/rm/rm4: * tests/rm/rm5: * tests/rm/unread2: * tests/rm/v-slash: * tests/touch/fail-diag: * tests/touch/not-owner:
75 lines
2.8 KiB
Bash
Executable File
75 lines
2.8 KiB
Bash
Executable File
#!/bin/sh
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# Detect printf(3) failure even when it doesn't set stream error indicator
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# Copyright (C) 2007-2008 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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prog="$abs_top_builddir/src/printf"
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if test "$VERBOSE" = yes; then
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set -x
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"$prog" --version
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fi
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. $top_srcdir/tests/test-lib.sh
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require_ulimit_
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fail=0
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# Up to coreutils-6.9, "printf %.Nf 0" would encounter an ENOMEM internal
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# error from glibc's printf(3) function whenever N was large relative to
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# the size of available memory. As of Oct 2007, that internal stream-
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# related failure was not reflected (for any libc I know of) in the usual
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# stream error indicator that is tested by ferror. The result was that
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# while the printf command obviously failed (generated no output),
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# it mistakenly exited successfully (exit status of 0).
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# Testing it is tricky, because there is so much variance
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# in quality for this corner of printf(3) implementations.
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# Most implementations do attempt to allocate N bytes of storage.
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# Using the maximum value for N (2^31-1) causes glibc to try to
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# allocate almost 2^64 bytes, while freeBSD 6.1's implementation
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# correctly outputs almost 2GB worth of 0's, which takes too long.
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# We want to test implementations that allocate N bytes, but without
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# triggering the above extremes.
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# The compromise is to limit virtual memory to something reasonable,
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# and to make an N-byte-allocating-printf require more than that, thus
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# triggering the printf(3) misbehavior -- which, btw, is required by ISO C99.
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( ulimit -v 10000
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"$prog" %20000000f 0 2>err | head -c 10 >out )
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# Map this longer, and rarer, diagnostic to the common one.
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# printf: cannot perform formatted output: Cannot allocate memory" \
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sed 's/cannot perform .*/write error/' err > k && mv k err
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case $(cat err) in
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"$prog: write error") diagnostic=y ;;
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'') diagnostic=n ;;
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*) diagnostic=unexpected ;;
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esac
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n_out=$(wc -c < out)
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case $n_out:$diagnostic in
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10:n) ;; # ok, succeeds w/no diagnostic: FreeBSD 6.1
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0:y) ;; # ok, glibc, when printf(3) fails with ENOMEM
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# 10:y) ;; # Fail: doesn't happen: nobody succeeds with a diagnostic
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# 0:n) ;; # Fail pre-patch: no output, no diag
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*) fail=1;
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esac
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(exit $fail); exit $fail
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