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| author | Bastien ROUCARIÈS <roucaries.bastien@gmail.com> | 2015-01-01 17:59:52 +0100 |
|---|---|---|
| committer | Bastien ROUCARIÈS <roucaries.bastien@gmail.com> | 2015-01-04 12:53:51 +0100 |
| commit | e3c5810d10d4eccca756896eac9a1624a5ad11c2 (patch) | |
| tree | 308856563233ad263ae3b65641b4948bc65e0bed /m4/ax_cxx_dtor_after_atexit.m4 | |
| parent | 44a16f8a6530f5fadab3b8544834fcc087aadaef (diff) | |
| download | autoconf-archive-e3c5810d10d4eccca756896eac9a1624a5ad11c2.tar.gz | |
Clarify why ax_cxx_dtor_after_atexit.m4
Use reference to c++ standard
Diffstat (limited to 'm4/ax_cxx_dtor_after_atexit.m4')
| -rw-r--r-- | m4/ax_cxx_dtor_after_atexit.m4 | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/m4/ax_cxx_dtor_after_atexit.m4 b/m4/ax_cxx_dtor_after_atexit.m4 index 5de88c0..ee05aa6 100644 --- a/m4/ax_cxx_dtor_after_atexit.m4 +++ b/m4/ax_cxx_dtor_after_atexit.m4 @@ -9,9 +9,23 @@ # DESCRIPTION # # If the C++ compiler calls global destructors after atexit functions, -# define HAVE_DTOR_AFTER_ATEXIT. WARNING: If cross-compiling, the test -# cannot be performed, the default action is to define -# HAVE_DTOR_AFTER_ATEXIT. +# define HAVE_DTOR_AFTER_ATEXIT. +# +# Per Paragraph 3.6.3/1 of the C++11 Standard: +# +# Destructors (12.4) for initialized objects [..] with static storage +# duration are called as a result of returning from main and as a result +# of calling std::exit (18.5). +# +# And per Paragraph 3.6.3/3: +# +# If the completion of the initialization of an object with static storage +# duration is sequenced before a call to std::atexit [..], the call to the +# function passed to std::atexit is sequenced before the call to the +# destructor for the object. +# +# WARNING: If cross-compiling, the test cannot be performed, the default +# action is to define HAVE_DTOR_AFTER_ATEXIT. # # LICENSE # @@ -23,7 +37,7 @@ # and this notice are preserved. This file is offered as-is, without any # warranty. -#serial 6 +#serial 7 AU_ALIAS([AC_CXX_DTOR_AFTER_ATEXIT], [AX_CXX_DTOR_AFTER_ATEXIT]) AC_DEFUN([AX_CXX_DTOR_AFTER_ATEXIT], |