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* configure.in: Use sigsetjmp by default so jumping out of signal

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handlers properly restores the signal mask and SS_ONSTACK flag.
  [ruby-core:54175] [Bug #8254]

* configure.in: Manually check for presence of sigsetjmp. It is not a
  function on some systems, so AC_CHECK_FUNCS cannot be used.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40402 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
charliesome 2013-04-21 12:35:23 +00:00
parent 595825dc57
commit c032cf6efe
2 changed files with 20 additions and 4 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
Sun Apr 21 21:35:00 2013 Charlie Somerville <charlie@charliesomerville.com>
* configure.in: Use sigsetjmp by default so jumping out of signal
handlers properly restores the signal mask and SS_ONSTACK flag.
[ruby-core:54175] [Bug #8254]
* configure.in: Manually check for presence of sigsetjmp. It is not a
function on some systems, so AC_CHECK_FUNCS cannot be used.
Sun Apr 21 08:00:55 2013 Tanaka Akira <akr@fsij.org>
* test/csv/test_features.rb, test/logger/test_logger.rb

15
configure.in
View file

@ -1696,13 +1696,20 @@ AC_CHECK_FUNCS(fmod killpg wait4 waitpid fork spawnv syscall __syscall chroot ge
setrgid setegid setregid setresgid issetugid pause lchown lchmod\
getpgrp setpgrp getpgid setpgid initgroups getgroups setgroups\
getpriority getrlimit setrlimit sysconf close getpwnam_r getgrnam_r\
dlopen sigprocmask sigaction sigsetjmp _setjmp _longjmp\
dlopen sigprocmask sigaction _setjmp _longjmp\
getsid setsid telldir seekdir fchmod cosh sinh tanh log2 round llabs\
setuid setgid daemon select_large_fdset setenv unsetenv\
mktime timegm gmtime_r clock_gettime gettimeofday poll ppoll\
pread sendfile shutdown sigaltstack dl_iterate_phdr\
dup dup3 pipe2 posix_memalign memalign ioctl)
AC_CACHE_CHECK(for sigsetjmp as a macro or function, ac_cv_func_sigsetjmp,
[AC_TRY_COMPILE([
#include <setjmp.h>
], [sigjmp_buf env; sigsetjmp(env,1);],
ac_cv_func_sigsetjmp=yes,
ac_cv_func_sigsetjmp=no)])
AC_CACHE_CHECK(for unsetenv returns a value, rb_cv_unsetenv_return_value,
[AC_TRY_COMPILE([
#include <stdlib.h>
@ -1738,12 +1745,12 @@ if test ${setjmp_prefix+set}; then
if test "${setjmp_prefix}" && eval test '$ac_cv_func_'${setjmp_prefix}setjmp = no; then
AC_MSG_ERROR(${setjmp_prefix}setjmp is not available)
fi
elif test "$ac_cv_func_sigsetjmp" = yes; then
AS_CASE([$target_os],[solaris*|cygwin*],[setjmp_prefix=],[setjmp_prefix=sig])
elif test "$ac_cv_func___builtin_setjmp" = yes; then
setjmp_prefix=__builtin_
elif test "$ac_cv_func__setjmp" = yes; then
setjmp_prefix=_
elif test "$ac_cv_func_sigsetjmp" = yes; then
AS_CASE([$target_os],[solaris*|cygwin*],[setjmp_prefix=],[setjmp_prefix=sig])
else
setjmp_prefix=
fi
@ -1753,7 +1760,7 @@ else
unset setjmp_sigmask
fi
AC_MSG_RESULT(${setjmp_prefix}setjmp)
AC_DEFINE_UNQUOTED([RUBY_SETJMP(env)], [${setjmp_prefix}setjmp(env${setjmp_sigmask+,0})])
AC_DEFINE_UNQUOTED([RUBY_SETJMP(env)], [${setjmp_prefix}setjmp(env${setjmp_sigmask+,1})])
AC_DEFINE_UNQUOTED([RUBY_LONGJMP(env,val)], [${setjmp_prefix}longjmp(env,val)])
AC_DEFINE_UNQUOTED(RUBY_JMP_BUF, ${setjmp_sigmask+${setjmp_prefix}}jmp_buf)