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Fix bug #554: include unistd.h before checking the presence of posix_memalign.

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This commit is contained in:
Gael Guennebaud 2013-06-26 22:49:14 +02:00
parent ffbe04ae78
commit 74beb218d2
1 changed files with 12 additions and 5 deletions
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13
Eigen/src/Core/util/Memory.h
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@ -58,10 +58,17 @@
#endif
#if ((defined __QNXNTO__) || (defined _GNU_SOURCE) || ((defined _XOPEN_SOURCE) && (_XOPEN_SOURCE >= 600))) \
&& (defined _POSIX_ADVISORY_INFO) && (_POSIX_ADVISORY_INFO > 0)
// See bug 554 (http://eigen.tuxfamily.org/bz/show_bug.cgi?id=554)
// It seems to be unsafe to check _POSIX_ADVISORY_INFO without including unistd.h first.
// Currently, let's include it only on unix systems:
#if defined(__unix__) || defined(__unix)
#include <unistd.h>
#if ((defined __QNXNTO__) || (defined _GNU_SOURCE) || ((defined _XOPEN_SOURCE) && (_XOPEN_SOURCE >= 600))) && (defined _POSIX_ADVISORY_INFO) && (_POSIX_ADVISORY_INFO > 0)
#define EIGEN_HAS_POSIX_MEMALIGN 1
#else
#endif
#endif
#ifndef EIGEN_HAS_POSIX_MEMALIGN
#define EIGEN_HAS_POSIX_MEMALIGN 0
#endif