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| author | Maria Matejka <mq@ucw.cz> | 2022-04-14 16:51:18 +0200 |
|---|---|---|
| committer | Maria Matejka <mq@ucw.cz> | 2022-05-04 15:37:41 +0200 |
| commit | 1d309c4ce6e95b68c64a8f007f6dd2f1830a5707 (patch) | |
| tree | fe84dc4c6681c127daee871670aa617e8e2377b5 /configure.ac | |
| parent | c1194ab7edbb17cb7371ac38e6eab5ae3ae72163 (diff) | |
Enforcing certain data structure explicit paddings.
Implicit paddings have undefined values in C. We want the eattr blocks
to be comparable by memcmp and eattrs settable directly by structrure
literals. This check ensures that all paddings in eattr and bval are
explicit and therefore zeroed in all literals.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 64181d29..321bed95 100644 --- a/configure.ac +++ b/configure.ac @@ -360,6 +360,13 @@ AC_C_BIGENDIAN( [AC_MSG_ERROR([Cannot determine CPU endianity.])] ) +BIRD_CHECK_POINTER_ALIGNMENT +if test "$bird_cv_pointer_alignment" = "unknown" ; then + AC_MSG_ERROR([Couldn't determine pointer alignment]) +else + AC_DEFINE_UNQUOTED([CPU_POINTER_ALIGNMENT], [$bird_cv_pointer_alignment], [Pointer alignment for macro usage]) +fi + BIRD_CHECK_ANDROID_GLOB if test "$bird_cv_lib_glob" = no ; then AC_MSG_ERROR([glob.h not found.]) |