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glibc/stdio-common/Makefile
Joseph Myers 7f04bb4e49 Add more tests of getline 
There is very little test coverage for getline (only a minimal
stdio-common/tstgetln.c which doesn't verify anything about the
results of the getline calls).  Add some more thorough tests
(generally using fopencookie for convenience in testing various cases
for what the input and possible errors / EOF in the file read might
look like).

Note the following regarding testing of error cases:

* Nothing is said in the specifications about what if anything might
  be written into the buffer, and whether it might be reallocated, in
  error cases.  The expectation of the tests (required to avoid memory
  leaks on error) is that at least on error cases, the invariant that
  lineptr points to at least n bytes is maintained.

* The optional EOVERFLOW error case specified in POSIX, "The number of
  bytes to be written into the buffer, including the delimiter
  character (if encountered), would exceed {SSIZE_MAX}.", doesn't seem
  practically testable, as any case reading so many characters (half
  the address space) would also be liable to run into allocation
  failure along (ENOMEM) the way.

* If a read error occurs part way through reading an input line, it
  seems unclear whether a partial line should be returned by getline
  (avoid input getting lost), which is what glibc does at least in the
  fopencookie case used in this test, or whether getline should return
  -1 (error) (so avoiding the program misbehaving by processing a
  truncated line as if it were complete).  (There was a short,
  inconclusive discussion about this on the Austin Group list on 9-10
  November 2014.)

* The POSIX specification of getline inherits errors from fgetc.  I
  didn't try to cover fgetc errors systematically, just one example of
  such an error.

Tested for x86_64 and x86.
2024-08-21 19:58:14 +00:00

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Makefile
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# Copyright (C) 1991-2024 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
#
# Specific makefile for stdio-common.
#
subdir := stdio-common
include ../Makeconfig
headers := \
bits/printf-ldbl.h \
bits/stdio_lim.h \
printf.h \
stdio_ext.h \
# headers
routines := \
_itoa \
_itowa \
asprintf \
ctermid \
cuserid \
dprintf \
flockfile \
fprintf \
fscanf \
ftrylockfile \
funlockfile \
gentempfd \
getline \
getw \
grouping_iterator \
iovfscanf \
isoc23_fscanf \
isoc23_scanf \
isoc23_sscanf \
isoc23_vfscanf \
isoc23_vscanf \
isoc23_vsscanf \
isoc99_fscanf \
isoc99_scanf \
isoc99_sscanf \
isoc99_vfscanf \
isoc99_vscanf \
isoc99_vsscanf \
itoa-digits \
itoa-udigits \
itowa-digits \
perror \
printf \
printf-prs \
printf_buffer_as_file \
printf_buffer_done \
printf_buffer_flush \
printf_buffer_pad_1 \
printf_buffer_putc_1 \
printf_buffer_puts_1 \
printf_buffer_to_file \
printf_buffer_write \
printf_fp \
printf_fphex \
printf_function_invoke \
printf_size \
psiginfo \
psignal \
putw \
reg-modifier \
reg-printf \
reg-type \
remove \
rename \
renameat \
renameat2 \
scanf \
snprintf \
sprintf \
sscanf \
tempnam \
tempname \
tmpdir \
tmpfile \
tmpfile64 \
tmpnam \
tmpnam_r \
translated_number_width \
vfprintf \
vfprintf-internal \
vfscanf \
vfscanf-internal \
vfwprintf \
vfwprintf-internal \
vfwscanf \
vfwscanf-internal \
vprintf \
wprintf_buffer_as_file \
wprintf_buffer_done \
wprintf_buffer_flush \
wprintf_buffer_pad_1 \
wprintf_buffer_putc_1 \
wprintf_buffer_puts_1 \
wprintf_buffer_to_file \
wprintf_buffer_write \
wprintf_function_invoke \
# routines
# Exclude fortified routines from being built with _FORTIFY_SOURCE
routines_no_fortify += \
asprintf \
dprintf \
fprintf \
printf \
snprintf \
sprintf \
vfprintf \
vfwprintf \
vprintf \
# routines_no_fortify
aux := \
errlist \
errlist-data \
errname \
fxprintf \
printf-parsemb \
printf-parsewc \
siglist \
# aux
tests := \
bug-vfprintf-nargs \
bug1 \
bug3 \
bug4 \
bug5 \
bug6 \
bug7 \
bug8 \
bug9 \
bug10 \
bug11 \
bug12 \
bug13 \
bug14 \
bug16 \
bug17 \
bug18 \
bug18a \
bug19 \
bug19a \
bug2 \
bug20 \
bug21 \
bug22 \
bug23 \
bug24 \
bug25 \
bug26 \
bug27 \
bug28 \
bug29 \
errnobug \
scanf1 \
scanf2 \
scanf3 \
scanf4 \
scanf5 \
scanf7 \
scanf8 \
scanf9 \
scanf10 \
scanf11 \
scanf12 \
scanf13 \
scanf14 \
scanf15 \
scanf16 \
scanf17 \
scanf18 \
scanf19 \
temptest \
test-fseek \
test-fwrite \
test-popen \
test-strerr \
test-vfprintf \
test_rdwr \
tfformat \
tiformat \
tllformat \
tst-bz11319 \
tst-bz11319-fortify2 \
tst-cookie \
tst-dprintf-length \
tst-fdopen \
tst-ferror \
tst-fgets \
tst-fileno \
tst-fmemopen \
tst-fmemopen2 \
tst-fmemopen3 \
tst-fmemopen4 \
tst-fphex \
tst-fphex-wide \
tst-fseek \
tst-fwrite \
tst-getline \
tst-getline-enomem \
tst-gets \
tst-grouping \
tst-grouping2 \
tst-grouping3 \
tst-long-dbl-fphex \
tst-memstream-string \
tst-obprintf \
tst-perror \
tst-popen \
tst-popen2 \
tst-printf-binary \
tst-printf-intn \
tst-printf-oct \
tst-printf-round \
tst-printfsz \
tst-put-error \
tst-renameat2 \
tst-rndseek \
tst-scanf-binary-c11 \
tst-scanf-binary-c23 \
tst-scanf-binary-gnu11 \
tst-scanf-binary-gnu89 \
tst-scanf-bz27650 \
tst-scanf-intn \
tst-scanf-round \
tst-scanf-to_inpunct \
tst-setvbuf1 \
tst-sprintf \
tst-sprintf-errno \
tst-sprintf2 \
tst-sprintf3 \
tst-sscanf \
tst-swprintf \
tst-swscanf \
tst-tmpnam \
tst-ungetc \
tst-ungetc-leak \
tst-unlockedio \
tst-vfprintf-mbs-prec \
tst-vfprintf-user-type \
tst-vfprintf-width-i18n \
tst-vfprintf-width-prec-alloc \
tst-wc-printf \
tstdiomisc \
tstgetln \
tstscanf \
xbug \
# tests
ifeq ($(run-built-tests),yes)
ifeq (yes,$(build-shared))
ifneq ($(PERL),no)
tests += \
tst-printf-bz18872 \
tst-printf-bz25691 \
tst-printf-fp-free \
tst-printf-fp-leak \
tst-vfprintf-width-prec \
# tests
endif
endif
endif
tests-container += \
tst-popen3
# tests-container
generated += \
errlist-data-aux-shared.S \
errlist-data-aux.S \
siglist-aux-shared.S \
siglist-aux.S \
# generated
tests-internal = \
tst-grouping_iterator \
# tests-internal
test-srcs = \
tst-printf \
tst-printfsz-islongdouble \
tst-unbputc \
# test-srcs
ifeq ($(run-built-tests),yes)
tests-special += \
$(objpfx)tst-printf.out \
$(objpfx)tst-printfsz-islongdouble.out \
$(objpfx)tst-setvbuf1-cmp.out \
$(objpfx)tst-unbputc.out \
# tests-special
ifeq (yes,$(build-shared))
ifneq ($(PERL),no)
tests-special += \
$(objpfx)tst-getline-enomem-mem.out \
$(objpfx)tst-getline-mem.out \
$(objpfx)tst-printf-bz18872-mem.out \
$(objpfx)tst-printf-bz25691-mem.out \
$(objpfx)tst-printf-fp-free-mem.out \
$(objpfx)tst-printf-fp-leak-mem.out \
$(objpfx)tst-ungetc-leak-mem.out \
$(objpfx)tst-vfprintf-width-prec-mem.out \
# tests-special
generated += \
tst-getline-enomem-mem.out \
tst-getline-enomem.mtrace \
tst-getline-mem.out \
tst-getline.mtrace \
tst-printf-bz18872-mem.out \
tst-printf-bz18872.c \
tst-printf-bz18872.mtrace \
tst-printf-bz25691-mem.out \
tst-printf-bz25691.mtrace \
tst-printf-fp-free-mem.out \
tst-printf-fp-free.mtrace \
tst-printf-fp-leak-mem.out \
tst-printf-fp-leak.mtrace \
tst-scanf-bz27650.mtrace \
tst-ungetc-leak-mem.out \
tst-ungetc-leak.mtrace \
tst-vfprintf-width-prec-mem.out \
tst-vfprintf-width-prec.mtrace \
# generated
endif
endif
endif # $(run-built-tests)
tests-special += $(objpfx)tst-errno-manual.out
include ../Rules
# The errlist.c is built in two phases because compiler might reorder the
# compat_symbol directive prior the object itself and on binutils older
# than 2.29 it might generate object sizes different than the expected ones.
$(objpfx)errlist-data-aux-shared.S: errlist-data-gen.c
$(make-target-directory)
$(compile-command.c) $(pic-cppflags) $(pic-ccflag) $(no-stack-protector) -S
$(objpfx)errlist-data-aux.S: errlist-data-gen.c
$(make-target-directory)
$(compile-command.c) $(pie-default) $(no-stack-protector) -S
ifndef no_deps
-include $(objpfx)errlist-data-aux.S.d $(objpfx)errlist-data-aux-shared.S.d
endif
$(objpfx)errlist-data.os: $(objpfx)errlist-data-aux-shared.S
$(addprefix $(objpfx)errlist-data, $(object-suffixes-noshared)): \
$(objpfx)errlist-data-aux.S
$(objpfx)siglist-aux-shared.S: siglist-gen.c
$(make-target-directory)
$(compile-command.c) $(pic-cppflags) $(pic-ccflag) $(no-stack-protector) -S
$(objpfx)siglist-aux.S: siglist-gen.c
$(make-target-directory)
$(compile-command.c) $(pie-default) $(no-stack-protector) -S
ifndef no_deps
-include $(objpfx)siglist-aux.S.d $(objpfx)siglist-aux-shared.S.d
endif
$(objpfx)siglist.os: $(objpfx)siglist-aux-shared.S
$(addprefix $(objpfx)siglist, $(object-suffixes-noshared)): \
$(objpfx)siglist-aux.S
ifeq ($(run-built-tests),yes)
LOCALES := \
bn_BD.UTF-8 \
de_DE.ISO-8859-1 \
de_DE.UTF-8 \
en_US.ISO-8859-1 \
fa_IR.UTF-8 \
hi_IN.UTF-8 \
ja_JP.EUC-JP \
ps_AF.UTF-8 \
rw_RW.UTF-8 \
tg_TJ.UTF-8 \
unm_US.UTF-8 \
# LOCALES
include ../gen-locales.mk
$(objpfx)bug14.out: $(gen-locales)
$(objpfx)scanf13.out: $(gen-locales)
$(objpfx)test-vfprintf.out: $(gen-locales)
$(objpfx)tst-grouping.out: $(gen-locales)
$(objpfx)tst-grouping2.out: $(gen-locales)
$(objpfx)tst-grouping_iterator.out: $(gen-locales)
$(objpfx)tst-sprintf.out: $(gen-locales)
$(objpfx)tst-sscanf.out: $(gen-locales)
$(objpfx)tst-swprintf.out: $(gen-locales)
$(objpfx)tst-vfprintf-mbs-prec.out: $(gen-locales)
$(objpfx)tst-vfprintf-width-i18n.out: $(gen-locales)
$(objpfx)tst-grouping3.out: $(gen-locales)
$(objpfx)tst-scanf-to_inpunct.out: $(gen-locales)
endif
tst-printf-bz18872-ENV = MALLOC_TRACE=$(objpfx)tst-printf-bz18872.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
tst-vfprintf-width-prec-ENV = \
MALLOC_TRACE=$(objpfx)tst-vfprintf-width-prec.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
tst-printf-bz25691-ENV = \
MALLOC_TRACE=$(objpfx)tst-printf-bz25691.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
tst-printf-fp-free-ENV = \
MALLOC_TRACE=$(objpfx)tst-printf-fp-free.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
tst-printf-fp-leak-ENV = \
MALLOC_TRACE=$(objpfx)tst-printf-fp-leak.mtrace \
LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
tst-scanf-bz27650-ENV = \
MALLOC_TRACE=$(objpfx)tst-scanf-bz27650.mtrace \
LD_PRELOAD=$(common-objpfx)malloc/libc_malloc_debug.so
tst-ungetc-leak-ENV = \
MALLOC_TRACE=$(objpfx)tst-ungetc-leak.mtrace \
LD_PRELOAD=$(common-objpfx)malloc/libc_malloc_debug.so
tst-getline-ENV = \
MALLOC_TRACE=$(objpfx)tst-getline.mtrace \
LD_PRELOAD=$(common-objpfx)malloc/libc_malloc_debug.so
tst-getline-enomem-ENV = \
MALLOC_TRACE=$(objpfx)tst-getline-enomem.mtrace \
LD_PRELOAD=$(common-objpfx)malloc/libc_malloc_debug.so
$(objpfx)tst-unbputc.out: tst-unbputc.sh $(objpfx)tst-unbputc
$(SHELL) $< $(common-objpfx) '$(test-program-prefix)'; \
$(evaluate-test)
$(objpfx)tst-printf.out: tst-printf.sh $(objpfx)tst-printf
$(SHELL) $< $(common-objpfx) '$(test-program-prefix)'; \
$(evaluate-test)
$(objpfx)tst-printfsz-islongdouble.out: \
tst-printfsz-islongdouble.sh $(objpfx)tst-printfsz-islongdouble
$(SHELL) $^ '$(test-program-prefix)' $@; \
$(evaluate-test)
# We generate this source because it requires a printf invocation with
# 10K arguments.
$(objpfx)tst-printf-bz18872.c: tst-printf-bz18872.sh
rm -f $@ && $(BASH) $^ > $@.new && mv $@.new $@
$(objpfx)tst-%-mem.out: $(objpfx)tst-%.out
$(common-objpfx)malloc/mtrace $(objpfx)tst-$*.mtrace > $@; \
$(evaluate-test)
errlist-h = $(firstword $(wildcard $(addsuffix /errlist.h,$(sysdirs) .)))
$(objpfx)tst-errno-manual.out: tst-errno-manual.py \
$(errlist-h) \
$(..)manual/errno.texi
$(PYTHON) tst-errno-manual.py -m $(..)manual/errno.texi \
-e $(errlist-h) > $@; \
$(evaluate-test)
CFLAGS-vfprintf.c += -Wno-uninitialized
CFLAGS-vfwprintf.c += -Wno-uninitialized
CFLAGS-tmpfile.c += -fexceptions
CFLAGS-tmpfile64.c += -fexceptions
CFLAGS-tempname.c += -fexceptions
CFLAGS-psignal.c += -fexceptions
CFLAGS-vprintf.c += -fexceptions
CFLAGS-cuserid.c += -fexceptions
CFLAGS-vfprintf.c += -fexceptions
CFLAGS-fprintf.c += -fexceptions
CFLAGS-printf.c += -fexceptions
CFLAGS-vfwprintf.c += -fexceptions
CFLAGS-vfscanf.c += -fexceptions
CFLAGS-vfwscanf.c += -fexceptions
CFLAGS-fscanf.c += -fexceptions
CFLAGS-scanf.c += -fexceptions
CFLAGS-isoc99_vfscanf.c += -fexceptions
CFLAGS-isoc99_vscanf.c += -fexceptions
CFLAGS-isoc99_fscanf.c += -fexceptions
CFLAGS-isoc99_scanf.c += -fexceptions
CFLAGS-isoc23_vfscanf.c += -fexceptions
CFLAGS-isoc23_vscanf.c += -fexceptions
CFLAGS-isoc23_fscanf.c += -fexceptions
CFLAGS-isoc23_scanf.c += -fexceptions
CFLAGS-dprintf.c += $(config-cflags-wno-ignored-attributes)
# Called during static library initialization, so turn stack-protection
# off for non-shared builds.
CFLAGS-_itoa.o = $(no-stack-protector)
CFLAGS-_itoa.op = $(no-stack-protector)
# scanf18.c and scanf19.c test a deprecated extension which is no
# longer visible under most conformance levels; see the source files
# for more detail.
CFLAGS-scanf18.c += -std=gnu89
CFLAGS-scanf19.c += -std=gnu89
CFLAGS-bug3.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-bug4.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-bug5.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-test-fseek.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-test-popen.c += -DOBJPFX=\"$(objpfx)\"
CFLAGS-test_rdwr.c += -DOBJPFX=\"$(objpfx)\"
# tst-gets.c tests a deprecated function.
CFLAGS-tst-gets.c += -Wno-deprecated-declarations
# BZ #11319 was first fixed for regular vdprintf, then reopened because
# the fortified version had the same bug.
CFLAGS-tst-bz11319-fortify2.c += $(no-fortify-source),-D_FORTIFY_SOURCE=2
CFLAGS-tst-memstream-string.c += -fno-builtin-fprintf
# Some versions of GCC supported for building glibc do not support -std=c23
# (added in GCC 14), or the older name -std=c2x (added in GCC 9), so
# the test for that version uses -std=c11 and then _ISOC23_SOURCE is defined in
# the test as needed.
CFLAGS-tst-scanf-binary-c11.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
CFLAGS-tst-scanf-binary-c23.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
CFLAGS-tst-scanf-binary-gnu11.c += -std=gnu11 -DOBJPFX=\"$(objpfx)\"
CFLAGS-tst-scanf-binary-gnu89.c += -std=gnu89 -DOBJPFX=\"$(objpfx)\"
CPPFLAGS += $(libio-mtsafe)
$(objpfx)tst-setvbuf1.out: /dev/null $(objpfx)tst-setvbuf1
$(test-program-cmd) > $@ 2>&1; \
$(evaluate-test)
$(objpfx)tst-setvbuf1-cmp.out: tst-setvbuf1.expect $(objpfx)tst-setvbuf1.out
cmp $^ > $@; \
$(evaluate-test)
$(objpfx)tst-printf-round: $(libm)
$(objpfx)tst-scanf-round: $(libm)
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