ObjFW  Diff

Annotate Patch Unified Diff

Differences From Artifact [63f2b5a434]:

  • File configure.ac — part of check-in [c615b62ed8] at 2024-04-16 23:50:40 on branch trunk — Don't use readdir_r

    readdir_r can easily lead to stack overflows if the path is longer than
    the space reserved for d_name in dirent. While some OSes use a length of
    MAXNAMLEN + 1, others use just 1. This could be worked around by always
    allocating a buffer of sizeof(struct dirent) + MAXNAMLEN (which would
    work only in case MAXNAMLEN is actually the longest readdir_r can
    return), but is probably not worth the risk, especially as glibc has
    entirely deprecated readdir_r and it is expected to be removed from
    POSIX. (user: js, size: 60786) [annotate] [blame] [check-ins using]

To Artifact [aab515e691]:

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	])

	AS_IF([test x"$enable_seluid24" = x"yes"], [
		AC_DEFINE(OF_SELUID24, 1, [Whether to use 24 bit selector UIDs])
	])

	AC_MSG_CHECKING(for exception type)
	AC_COMPILE_IFELSE([
		AC_LANG_PROGRAM([
			extern void foo();
		], [
			@try {
				foo();
			} @finally {
				foo();
			}
		])
	], [
		AS_IF([$SED 's/[[^[:print:]]]//g' <conftest.$ac_objext | \
		    $EGREP __gnu_objc_personality_v0 >/dev/null], [

			exception_type="DWARF"
		])
		AS_IF([$SED 's/[[^[:print:]]]//g' <conftest.$ac_objext | \
		    $EGREP __gnu_objc_personality_sj0 >/dev/null], [
			exception_type="SjLj"
		])
		AS_IF([$SED 's/[[^[:print:]]]//g' <conftest.$ac_objext | \
		    $EGREP __gnu_objc_personality_seh0 >/dev/null], [

			exception_type="SEH"

		])

		case "$exception_type" in
		DWARF)
			AC_DEFINE(HAVE_DWARF_EXCEPTIONS, 1,
				[Whether DWARF exceptions are used])
			raise_exception="_Unwind_RaiseException"
			;;
		SjLj)
			AC_DEFINE(HAVE_SJLJ_EXCEPTIONS, 1,
				[Whether SjLj exceptions are used])
			raise_exception="_Unwind_SjLj_RaiseException"
			;;
		SEH)
			AC_DEFINE(HAVE_SEH_EXCEPTIONS, 1,
				[Whether SEH exceptions are used])
			raise_exception="_Unwind_RaiseException"
			;;
		*)
			AC_MSG_RESULT(unknown)
			AC_MSG_ERROR([Exception type not detected!])
			;;
		esac

		AC_MSG_RESULT($exception_type)
	], [
		AC_MSG_RESULT(exceptions unavailable!)
		AC_MSG_ERROR([Exceptions not accepted by compiler!])


	])

	AC_SEARCH_LIBS($raise_exception, [c++abi gcc_s gcc unwind], [
		dnl c++abi requires pthread on OpenBSD
		AS_IF([test x"$ac_lib" = x"c++abi"], [LIBS="$LIBS -lpthread"])
	], [
		AC_MSG_ERROR([$raise_exception missing!])








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	])

	AS_IF([test x"$enable_seluid24" = x"yes"], [
		AC_DEFINE(OF_SELUID24, 1, [Whether to use 24 bit selector UIDs])
	])

	AC_MSG_CHECKING(for exception type)

	AC_EGREP_CPP(egrep_cpp_yes, [

		#ifdef __SEH__
		egrep_cpp_yes

		#endif



	], [


		AC_MSG_RESULT(SEH)
		exception_type="SEH"



		raise_exception="_Unwind_RaiseException"
	], [

		AC_EGREP_CPP(egrep_cpp_yes, [
			#ifdef __USING_SJLJ_EXCEPTIONS__
			egrep_cpp_yes
			#endif
		], [
			AC_MSG_RESULT(SjLj)
			exception_type="SjLj"








			raise_exception="_Unwind_SjLj_RaiseException"













		], [
			AC_MSG_RESULT(DWARF)
			exception_type="DWARF"
			raise_exception="_Unwind_RaiseException"
		])
	])

	AC_SEARCH_LIBS($raise_exception, [c++abi gcc_s gcc unwind], [
		dnl c++abi requires pthread on OpenBSD
		AS_IF([test x"$ac_lib" = x"c++abi"], [LIBS="$LIBS -lpthread"])
	], [
		AC_MSG_ERROR([$raise_exception missing!])
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Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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