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author
Christian Grothoff
<christian@grothoff.org>
Wed, 14 Sep 2011 14:31:29 +0000
(14:31 +0000)
committer
Christian Grothoff
<christian@grothoff.org>
Wed, 14 Sep 2011 14:31:29 +0000
(14:31 +0000)
m4/align.m4
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diff --git
a/m4/align.m4
b/m4/align.m4
index 256300e377902d73a789348b63eae0bf6045ce8e..733afa6d47f32f8809d9f7d9aac98d09a9f66fc9 100644
(file)
--- a/
m4/align.m4
+++ b/
m4/align.m4
@@
-14,8
+14,12
@@
AC_DEFUN([AC_UNALIGNED_64_ACCESS],
ac_cv_unaligned_64_access,
[
AC_RUN_IFELSE(AC_LANG_PROGRAM([[struct S { int a,b,c;};]],
- [[struct S s = {0,0,0}; long long * p = &s.b;
- long long x = *p; return (int) x*x;]]),
+ [[struct S s = {0,0,0}; long long * p = (long long *) &s.b;
+ void *bp = malloc (50);
+ long long x = *p;
+ long long *be = (long long*) &bp[1];
+ long long y = *be;
+ return (int) x*y;]]),
ac_cv_unaligned_64_access=yes,
ac_cv_unaligned_64_access=no,
ac_cv_unaligned_64_access=no)