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author | Jörg Frings-Fürst <debian@jff.email> | 2022-01-08 11:53:52 +0100 |
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committer | Jörg Frings-Fürst <debian@jff.email> | 2022-01-08 11:53:52 +0100 |
commit | fa838e76139763f902c7d27cb9e1d393ed6a15e4 (patch) | |
tree | 7d0ae09775ea950056193eaa2ca93844299d46f1 /gnulib-m4/flexmember.m4 | |
parent | c78359d9542c86b972aac373efcf7bc7a8a560e5 (diff) | |
parent | 2959e59fab3bab834368adefd90bd4b1b094366b (diff) |
Merge branch 'feature/upstream' into develop
Diffstat (limited to 'gnulib-m4/flexmember.m4')
-rw-r--r-- | gnulib-m4/flexmember.m4 | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/gnulib-m4/flexmember.m4 b/gnulib-m4/flexmember.m4 index db93cf35..3b4237e9 100644 --- a/gnulib-m4/flexmember.m4 +++ b/gnulib-m4/flexmember.m4 @@ -1,7 +1,7 @@ # serial 5 # Check for flexible array member support. -# Copyright (C) 2006, 2009-2018 Free Software Foundation, Inc. +# Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. @@ -34,12 +34,10 @@ AC_DEFUN([AC_C_FLEXIBLE_ARRAY_MEMBER], AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not. That way, with a declaration like 'struct s - { int n; double d@<:@FLEXIBLE_ARRAY_MEMBER@:>@; };', the struct hack + { int n; short d@<:@FLEXIBLE_ARRAY_MEMBER@:>@; };', the struct hack can be used with pre-C99 compilers. - When computing the size of such an object, don't use 'sizeof (struct s)' - as it overestimates the size. Use 'offsetof (struct s, d)' instead. - Don't use 'offsetof (struct s, d@<:@0@:>@)', as this doesn't work with - MSVC and with C++ compilers.]) + Use 'FLEXSIZEOF (struct s, d, N * sizeof (short))' to calculate + the size in bytes of such a struct containing an N-element array.]) else AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1]) fi |