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c92d40c0bc
There appears to be a discrepancy among the implementations of setcontext with regards to the function called once the last linked-to context has finished executing via setcontext. The POSIX standard says: ~~~ If the uc_link member of the ucontext_t structure pointed to by the ucp argument is equal to 0, then this context is the main context, and the thread will exit when this context returns. ~~~ It says "exit" not "exit immediately" nor "exit without running functions registered with atexit or on_exit." Therefore the AArch64, ARM, hppa and NIOS II implementations are wrong and no test detects it. It is questionable if this should even be fixed or just documented that the above 4 targets are wrong. The functions are deprecated and nobody should be using them, but at the same time it silly to have cross-target differences that make it hard to port old applications from say x86_64 to AArch64. Therefore I will ix the 4 arches, and checkin a regression test to prevent it from changing again. https://sourceware.org/ml/libc-alpha/2015-03/msg00720.html
167 lines
5.8 KiB
Makefile
167 lines
5.8 KiB
Makefile
# Copyright (C) 1991-2015 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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# <http://www.gnu.org/licenses/>.
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#
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# Makefile for stdlib routines
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#
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subdir := stdlib
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include ../Makeconfig
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headers := stdlib.h bits/stdlib.h bits/stdlib-ldbl.h bits/stdlib-float.h \
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monetary.h bits/monetary-ldbl.h \
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inttypes.h stdint.h bits/wordsize.h \
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errno.h sys/errno.h bits/errno.h \
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ucontext.h sys/ucontext.h \
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alloca.h fmtmsg.h \
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bits/stdlib-bsearch.h
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routines := \
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atof atoi atol atoll \
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abort \
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bsearch qsort msort \
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getenv putenv setenv secure-getenv \
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exit on_exit atexit cxa_atexit cxa_finalize old_atexit \
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quick_exit at_quick_exit cxa_at_quick_exit cxa_thread_atexit_impl \
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abs labs llabs \
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div ldiv lldiv \
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mblen mbstowcs mbtowc wcstombs wctomb \
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random random_r rand rand_r \
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drand48 erand48 lrand48 nrand48 mrand48 jrand48 \
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srand48 seed48 lcong48 \
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drand48_r erand48_r lrand48_r nrand48_r mrand48_r jrand48_r \
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srand48_r seed48_r lcong48_r \
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drand48-iter \
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strtol strtoul strtoll strtoull \
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strtol_l strtoul_l strtoll_l strtoull_l \
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strtof strtod strtold \
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strtof_l strtod_l strtold_l \
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system canonicalize \
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a64l l64a \
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rpmatch strfmon strfmon_l getsubopt xpg_basename fmtmsg \
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strtoimax strtoumax wcstoimax wcstoumax \
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getcontext setcontext makecontext swapcontext
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aux = grouping groupingwc tens_in_limb
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# These routines will be omitted from the libc shared object.
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# Instead the static object files will be included in a special archive
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# linked against when the shared library will be used.
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static-only-routines = atexit at_quick_exit
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test-srcs := tst-fmtmsg
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tests := tst-strtol tst-strtod testmb testrand testsort testdiv \
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test-canon test-canon2 tst-strtoll tst-environ \
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tst-xpg-basename tst-random tst-random2 tst-bsearch \
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tst-limits tst-rand48 bug-strtod tst-setcontext \
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tst-setcontext2 test-a64l tst-qsort tst-system testmb2 \
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bug-strtod2 tst-atof1 tst-atof2 tst-strtod2 tst-strtod3 \
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tst-rand48-2 tst-makecontext tst-strtod4 tst-strtod5 \
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tst-qsort2 tst-makecontext2 tst-strtod6 tst-unsetenv1 \
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tst-makecontext3 bug-getcontext bug-fmtmsg1 \
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tst-secure-getenv tst-strtod-overflow tst-strtod-round \
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tst-tininess tst-strtod-underflow tst-tls-atexit \
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tst-setcontext3
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tests-static := tst-secure-getenv
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modules-names = tst-tls-atexit-lib
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ifeq ($(build-shared),yes)
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tests += tst-putenv
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endif
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# Several mpn functions from GNU MP are used by the strtod function.
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mpn-routines := inlines add_n addmul_1 cmp divmod_1 divrem udiv_qrnnd \
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lshift rshift mod_1 mul mul_1 mul_n sub_n submul_1
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mpn-headers = longlong.h gmp.h gmp-impl.h gmp-mparam.h asm-syntax.h
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routines := $(strip $(routines) $(mpn-routines)) \
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dbl2mpn ldbl2mpn \
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mpn2flt mpn2dbl mpn2ldbl
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aux += fpioconst mp_clz_tab
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tests-extras += tst-putenvmod
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extra-test-objs += tst-putenvmod.os
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generated += isomac isomac.out tst-putenvmod.so
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CFLAGS-bsearch.c = $(uses-callbacks)
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CFLAGS-msort.c = $(uses-callbacks)
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CFLAGS-qsort.c = $(uses-callbacks)
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CFLAGS-system.c = -fexceptions
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CFLAGS-system.os = -fomit-frame-pointer
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CFLAGS-fmtmsg.c = -fexceptions
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CFLAGS-strfmon.c = $(libio-mtsafe)
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CFLAGS-strfmon_l.c = $(libio-mtsafe)
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CFLAGS-tst-bsearch.c = $(stack-align-test-flags)
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CFLAGS-tst-qsort.c = $(stack-align-test-flags)
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CFLAGS-tst-makecontext2.c = $(stack-align-test-flags)
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# Run a test on the header files we use.
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tests-special += $(objpfx)isomac.out
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ifeq ($(run-built-tests),yes)
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tests-special += $(objpfx)tst-fmtmsg.out
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endif
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include ../Rules
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# Testdir has to be named stdlib and needs to be writable
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test-canon-ARGS = --test-dir=${common-objpfx}stdlib
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bug-fmtmsg1-ENV = SEV_LEVEL=foo,11,newsev
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$(objpfx)isomac.out: $(objpfx)isomac
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$(dir $<)$(notdir $<) '$(CC)' \
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'-I../include $(+sysdep-includes) $(sysincludes) -I..' > $<.out; \
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$(evaluate-test)
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isomac-CFLAGS = -O
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$(objpfx)isomac: isomac.c
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$(native-compile)
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$(objpfx)tst-fmtmsg.out: tst-fmtmsg.sh $(objpfx)tst-fmtmsg
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$(SHELL) $< $(common-objpfx) '$(test-program-prefix-before-env)' \
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'$(run-program-env)' '$(test-program-prefix-after-env)' \
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$(common-objpfx)stdlib/; \
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$(evaluate-test)
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$(objpfx)tst-putenv: $(objpfx)tst-putenvmod.so
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LDFLAGS-tst-putenv = $(no-as-needed)
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$(objpfx)tst-putenvmod.so: $(objpfx)tst-putenvmod.os $(link-libc-deps)
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$(build-module)
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libof-tst-putenvmod = extramodules
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$(objpfx)bug-getcontext: $(libm)
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$(objpfx)tst-strtod-round: $(libm)
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$(objpfx)tst-tininess: $(libm)
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$(objpfx)tst-strtod-underflow: $(libm)
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$(objpfx)tst-strtod6: $(libm)
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tst-tls-atexit-lib.so-no-z-defs = yes
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$(objpfx)tst-tls-atexit: $(shared-thread-library) $(libdl)
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$(objpfx)tst-tls-atexit.out: $(objpfx)tst-tls-atexit-lib.so
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$(objpfx)tst-setcontext3.out: tst-setcontext3.sh $(objpfx)tst-setcontext3
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$(SHELL) $< $(common-objpfx) '$(test-program-prefix-before-env)' \
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'$(run-program-env)' '$(test-program-prefix-after-env)' \
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$(common-objpfx)stdlib/; \
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$(evaluate-test)
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