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Check for alloc_size attribute in configure.ac

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This commit is contained in:
Benny Baumann
2021-06-27 12:44:01 +02:00
committed by BenBE
parent 3da142b4b6
commit 44d1200ca4
2 changed files with 26 additions and 4 deletions
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14
configure.ac
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@ -173,6 +173,20 @@ AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_MSG_CHECKING(for alloc_size)
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wno-error -Werror=attributes"
AC_COMPILE_IFELSE([
AC_LANG_SOURCE(
[
__attribute__((alloc_size(1))) char* my_alloc(int size) { return 0; }
],[]
)],
AC_DEFINE([HAVE_ATTR_ALLOC_SIZE], 1, [The alloc_size attribute is supported.])
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))
CFLAGS="$old_CFLAGS"
# ----------------------------------------------------------------------