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edc696a73a
The _IO_wfile_overflow does not check if the write pointer for wide
data is valid before access, different than _IO_file_overflow. This
leads to crash on some cases, as described by bug 28828.
The minimal sequence to produce the crash was:
#include <stdio.h>
#include <wchar.h>
int main (int ac, char **av)
{
setvbuf (stdout, NULL, _IOLBF, 0);
fgetwc (stdin);
fputwc (10, stdout); /*CRASH HERE!*/
return 0;
}
The "fgetwc(stdin);" is necessary since it triggers the bug by setting
the flag _IO_CURRENTLY_PUTTING on stdout indirectly (file wfileops.c,
function _IO_wfile_underflow, line 213).
Signed-off-by: Jose Bollo <jobol@nonadev.net>
284 lines
11 KiB
Makefile
284 lines
11 KiB
Makefile
# Copyright (C) 1995-2022 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library 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 GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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#
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# Specific makefile for libio.
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#
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subdir := libio
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include ../Makeconfig
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headers := stdio.h \
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bits/stdio.h bits/stdio2.h bits/stdio-ldbl.h \
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bits/types/FILE.h bits/types/__FILE.h bits/types/struct_FILE.h \
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bits/types/__fpos_t.h bits/types/__fpos64_t.h \
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bits/types/cookie_io_functions_t.h
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routines := \
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filedoalloc iofclose iofdopen iofflush iofgetpos iofgets iofopen \
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iofopncook iofputs iofread iofsetpos ioftell wfiledoalloc \
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iofwrite iogetdelim iogetline iogets iopadn iopopen ioputs \
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ioseekoff ioseekpos iosetbuffer iosetvbuf ioungetc \
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iovsprintf iovsscanf \
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iofgetpos64 iofopen64 iofsetpos64 \
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fputwc fputwc_u getwc getwc_u getwchar getwchar_u iofgetws iofgetws_u \
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iofputws iofputws_u iogetwline iowpadn ioungetwc putwc putwc_u \
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putwchar putwchar_u putchar putchar_u fwprintf swprintf vwprintf \
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wprintf wscanf fwscanf vwscanf vswprintf iovswscanf swscanf wgenops \
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wstrops wfileops iofwide fwide wmemstream \
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\
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clearerr feof ferror fileno fputc freopen fseek getc getchar \
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memstream pclose putc putchar rewind setbuf setlinebuf vasprintf \
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iovdprintf vscanf vsnprintf obprintf fcloseall fseeko ftello \
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freopen64 fseeko64 ftello64 \
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\
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__fbufsize __freading __fwriting __freadable __fwritable __flbf \
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__fpurge __fpending __fsetlocking \
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\
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libc_fatal fmemopen oldfmemopen vtables
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tests = tst_swprintf tst_wprintf tst_swscanf tst_wscanf tst_getwc tst_putwc \
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tst_wprintf2 tst-widetext test-fmemopen tst-ext tst-ext2 \
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tst-fgetws tst-ungetwc1 tst-ungetwc2 tst-swscanf tst-sscanf \
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tst-mmap-setvbuf bug-ungetwc1 bug-ungetwc2 tst-atime tst-eof \
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tst-freopen bug-rewind bug-rewind2 bug-ungetc bug-fseek \
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tst-mmap-eofsync tst-mmap-fflushsync bug-mmap-fflush \
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tst-mmap2-eofsync tst-mmap-offend bug-fopena+ bug-wfflush \
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bug-ungetc2 bug-ftell bug-ungetc3 bug-ungetc4 tst-fopenloc2 \
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tst-memstream1 tst-memstream2 tst-memstream3 tst-memstream4 \
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tst-wmemstream1 tst-wmemstream2 tst-wmemstream3 tst-wmemstream4 \
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tst-wmemstream5 bug-memstream1 bug-wmemstream1 \
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tst-setvbuf1 tst-popen1 tst-fgetwc bug-wsetpos tst-fseek \
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tst-fwrite-error tst-ftell-partial-wide tst-ftell-active-handler \
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tst-ftell-append tst-fputws tst-bz22415 tst-fgetc-after-eof \
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tst-sprintf-ub tst-sprintf-chk-ub tst-bz24051 tst-bz24153 \
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tst-wfile-sync tst-bz28828
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tests-internal = tst-vtables tst-vtables-interposed
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ifeq (yes,$(build-shared))
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# Add test-fopenloc only if shared library is enabled since it depends on
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# shared localedata objects.
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tests += tst-fopenloc
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# Add tst-bz24228 only if shared library is enabled since it can never meet its
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# objective with static linking because the relevant code just is not there.
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tests += tst-bz24228
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endif
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test-srcs = test-freopen
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ifeq ($(build-shared),yes)
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routines += oldiofopen oldiofdopen oldiofclose oldiopopen oldpclose \
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oldtmpfile oldiofgetpos oldiofgetpos64 oldiofsetpos \
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oldiofsetpos64
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endif
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ifeq (yes,$(libc-reentrant))
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routines += clearerr_u feof_u ferror_u fputc_u getc_u getchar_u \
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iofflush_u putc_u putchar_u peekc iofread_u iofwrite_u iofgets_u \
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iofputs_u
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endif
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CPPFLAGS += $(libio-mtsafe)
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# Support for exception handling.
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CFLAGS-fileops.c += -fexceptions
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CFLAGS-fputc.c += -fexceptions
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CFLAGS-fputwc.c += -fexceptions
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CFLAGS-freopen64.c += -fexceptions
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CFLAGS-freopen.c += -fexceptions
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CFLAGS-fseek.c += -fexceptions
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CFLAGS-fseeko64.c += -fexceptions
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CFLAGS-fseeko.c += -fexceptions
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CFLAGS-ftello64.c += -fexceptions
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CFLAGS-ftello.c += -fexceptions
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CFLAGS-fwide.c += -fexceptions
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CFLAGS-genops.c += -fexceptions
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CFLAGS-getc.c += -fexceptions
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CFLAGS-getchar.c += -fexceptions
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CFLAGS-getwc.c += -fexceptions
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CFLAGS-getwchar.c += -fexceptions
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CFLAGS-iofclose.c += -fexceptions
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CFLAGS-iofflush.c += -fexceptions
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CFLAGS-iofgetpos64.c += -fexceptions
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CFLAGS-iofgetpos.c += -fexceptions
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CFLAGS-iofgets.c += -fexceptions
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CFLAGS-iofgetws.c += -fexceptions
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CFLAGS-iofputs.c += -fexceptions
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CFLAGS-iofputws.c += -fexceptions
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CFLAGS-iofread.c += -fexceptions
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CFLAGS-iofsetpos64.c += -fexceptions
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CFLAGS-iofsetpos.c += -fexceptions
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CFLAGS-ioftell.c += -fexceptions
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CFLAGS-iofwrite.c += -fexceptions
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CFLAGS-iogetdelim.c += -fexceptions
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CFLAGS-iogetline.c += -fexceptions
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CFLAGS-iogets.c += -fexceptions
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CFLAGS-iogetwline.c += -fexceptions
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CFLAGS-ioputs.c += -fexceptions
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CFLAGS-ioseekoff.c += -fexceptions
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CFLAGS-ioseekpos.c += -fexceptions
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CFLAGS-iosetbuffer.c += -fexceptions
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CFLAGS-iosetvbuf.c += -fexceptions
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CFLAGS-ioungetc.c += -fexceptions
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CFLAGS-ioungetwc.c += -fexceptions
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CFLAGS-oldfileops.c += -fexceptions
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CFLAGS-oldiofclose.c += -fexceptions
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CFLAGS-oldiofgetpos64.c += -fexceptions
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CFLAGS-oldiofgetpos.c += -fexceptions
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CFLAGS-oldiofsetpos64.c += -fexceptions
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CFLAGS-oldiofsetpos.c += -fexceptions
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CFLAGS-peekc.c += -fexceptions
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CFLAGS-putc.c += -fexceptions
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CFLAGS-putchar.c += -fexceptions
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CFLAGS-putwc.c += -fexceptions
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CFLAGS-putwchar.c += -fexceptions
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CFLAGS-rewind.c += -fexceptions
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CFLAGS-wfileops.c += -fexceptions
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CFLAGS-wgenops.c += -fexceptions
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CFLAGS-oldiofopen.c += -fexceptions
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CFLAGS-iofopen.c += -fexceptions
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CFLAGS-iofopen64.c += -fexceptions
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CFLAGS-oldtmpfile.c += -fexceptions
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# XXX Do we need filedoalloc and wfiledoalloc? Others?
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CFLAGS-tst_putwc.c += -DOBJPFX=\"$(objpfx)\"
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# These test cases intentionally use overlapping arguments
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CFLAGS-tst-sprintf-ub.c += -Wno-restrict
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CFLAGS-tst-sprintf-chk-ub.c += -Wno-restrict
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LDFLAGS-tst-bz24228 = -Wl,--version-script=tst-bz24228.map
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tst_wprintf2-ARGS = "Some Text"
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test-fmemopen-ENV = MALLOC_TRACE=$(objpfx)test-fmemopen.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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tst-fopenloc-ENV = MALLOC_TRACE=$(objpfx)tst-fopenloc.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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tst-bz22415-ENV = MALLOC_TRACE=$(objpfx)tst-bz22415.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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tst-bz24228-ENV = MALLOC_TRACE=$(objpfx)tst-bz24228.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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generated += test-fmemopen.mtrace test-fmemopen.check
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generated += tst-fopenloc.mtrace tst-fopenloc.check
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generated += tst-bz22415.mtrace tst-bz22415.check
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aux := fileops genops stdfiles stdio strops
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ifeq ($(build-shared),yes)
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generated += tst-bz24228.mtrace tst-bz24228.check
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aux += oldfileops oldstdfiles
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endif
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shared-only-routines = oldiofopen oldiofdopen oldiofclose oldfileops \
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oldstdfiles oldiopopen oldpclose oldtmpfile \
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oldiofgetpos oldiofgetpos64 oldiofsetpos \
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oldiofsetpos64
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ifeq ($(run-built-tests),yes)
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tests-special += $(objpfx)test-freopen.out $(objpfx)test-fmemopen-mem.out \
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$(objpfx)tst-bz22415-mem.out
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ifeq (yes,$(build-shared))
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# Run tst-fopenloc-cmp.out and tst-openloc-mem.out only if shared
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# library is enabled since they depend on tst-fopenloc.out.
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tests-special += $(objpfx)tst-fopenloc-cmp.out $(objpfx)tst-fopenloc-mem.out \
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$(objpfx)tst-bz24228-mem.out
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endif
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tests += tst-cleanup-default tst-cleanup-default-static
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tests-static += tst-cleanup-default-static
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tests-special += $(objpfx)tst-cleanup-default-cmp.out $(objpfx)tst-cleanup-default-static-cmp.out
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LDFLAGS-tst-cleanup-default = -Wl,--gc-sections
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LDFLAGS-tst-cleanup-default-static = -Wl,--gc-sections
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ifeq ($(have-gnu-retain)$(have-z-start-stop-gc),yesyes)
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tests += tst-cleanup-start-stop-gc tst-cleanup-start-stop-gc-static \
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tst-cleanup-nostart-stop-gc tst-cleanup-nostart-stop-gc-static
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tests-static += tst-cleanup-start-stop-gc-static tst-cleanup-nostart-stop-gc-static
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tests-special += $(objpfx)tst-cleanup-start-stop-gc-cmp.out \
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$(objpfx)tst-cleanup-start-stop-gc-static-cmp.out \
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$(objpfx)tst-cleanup-nostart-stop-gc-cmp.out \
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$(objpfx)tst-cleanup-nostart-stop-gc-static-cmp.out
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LDFLAGS-tst-cleanup-start-stop-gc := -Wl,--gc-sections,-z,start-stop-gc
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LDFLAGS-tst-cleanup-start-stop-gc-static := -Wl,--gc-sections,-z,start-stop-gc
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LDFLAGS-tst-cleanup-nostart-stop-gc := -Wl,--gc-sections,-z,nostart-stop-gc
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LDFLAGS-tst-cleanup-nostart-stop-gc-static := -Wl,--gc-sections,-z,nostart-stop-gc
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endif
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endif
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include ../Rules
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ifeq ($(run-built-tests),yes)
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LOCALES := de_DE.ISO-8859-1 de_DE.UTF-8 en_US.ISO-8859-1 en_US.UTF-8 \
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ja_JP.EUC-JP ja_JP.UTF-8
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include ../gen-locales.mk
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$(objpfx)bug-ftell.out: $(gen-locales)
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$(objpfx)bug-ungetwc1.out: $(gen-locales)
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$(objpfx)bug-ungetwc2.out: $(gen-locales)
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$(objpfx)tst-fgetwc.out: $(gen-locales)
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$(objpfx)tst-fgetws.out: $(gen-locales)
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$(objpfx)tst-fopenloc.out: $(gen-locales)
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$(objpfx)tst-fputws.out: $(gen-locales)
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$(objpfx)tst-fseek.out: $(gen-locales)
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$(objpfx)tst-ftell-active-handler.out: $(gen-locales)
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$(objpfx)tst-ftell-append.out: $(gen-locales)
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$(objpfx)tst-ftell-partial-wide.out: $(gen-locales)
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$(objpfx)tst-setvbuf1.out: $(gen-locales)
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$(objpfx)tst-swscanf.out: $(gen-locales)
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$(objpfx)tst-ungetwc1.out: $(gen-locales)
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$(objpfx)tst-ungetwc2.out: $(gen-locales)
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$(objpfx)tst-widetext.out: $(gen-locales)
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$(objpfx)tst_wprintf2.out: $(gen-locales)
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$(objpfx)tst-wfile-sync.out: $(gen-locales)
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endif
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define gen-tst-cleanup
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$(objpfx)tst-cleanup-$1-cmp.out: tst-cleanup.exp $(objpfx)tst-cleanup-$1.out
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cmp $$^ > $$@; $$(evaluate-test)
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endef
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$(foreach t,default default-static start-stop-gc start-stop-gc-static nostart-stop-gc nostart-stop-gc-static, \
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$(eval $(call gen-tst-cleanup,$(t))))
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$(objpfx)test-freopen.out: test-freopen.sh $(objpfx)test-freopen
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$(SHELL) $< $(common-objpfx) '$(test-program-prefix)' \
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$(common-objpfx)libio/; \
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$(evaluate-test)
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$(objpfx)tst-fopenloc-cmp.out: ../iconvdata/testdata/ISO-8859-1..UTF8 \
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$(objpfx)tst-fopenloc.out
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cmp $^ > $@; \
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$(evaluate-test)
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$(objpfx)test-fmemopen-mem.out: $(objpfx)test-fmemopen.out
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$(common-objpfx)malloc/mtrace $(objpfx)test-fmemopen.mtrace > $@; \
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$(evaluate-test)
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$(objpfx)tst-fopenloc-mem.out: $(objpfx)tst-fopenloc.out
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$(common-objpfx)malloc/mtrace $(objpfx)tst-fopenloc.mtrace > $@; \
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$(evaluate-test)
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$(objpfx)tst-bz22415-mem.out: $(objpfx)tst-bz22415.out
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$(common-objpfx)malloc/mtrace $(objpfx)tst-bz22415.mtrace > $@; \
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$(evaluate-test)
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$(objpfx)tst-bz24228-mem.out: $(objpfx)tst-bz24228.out
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$(common-objpfx)malloc/mtrace $(objpfx)tst-bz24228.mtrace > $@; \
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$(evaluate-test)
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