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Fix bug #552: disable EIGEN_GLIBC_MALLOC_ALREADY_ALIGNED when compiling with -fsanitize=address, and allow users to manually tell whether EIGEN_MALLOC_ALREADY_ALIGNED.

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This commit is contained in:
Gael Guennebaud
2013-02-25 19:17:13 +01:00
parent 12a1313b09
commit b6dc2613ac
2 changed files with 11 additions and 2 deletions
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8
Eigen/src/Core/util/Memory.h
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@@ -19,6 +19,10 @@
#ifndef EIGEN_MEMORY_H
#define EIGEN_MEMORY_H
#ifndef EIGEN_MALLOC_ALREADY_ALIGNED
// Try to determine automatically if malloc is already aligned.
// On 64-bit systems, glibc's malloc returns 16-byte-aligned pointers, see:
// http://www.gnu.org/s/libc/manual/html_node/Aligned-Memory-Blocks.html
// This is true at least since glibc 2.8.
@@ -27,7 +31,7 @@
// page 114, "[The] LP64 model [...] is used by all 64-bit UNIX ports" so it's indeed
// quite safe, at least within the context of glibc, to equate 64-bit with LP64.
#if defined(__GLIBC__) && ((__GLIBC__>=2 && __GLIBC_MINOR__ >= 8) || __GLIBC__>2) \
&& defined(__LP64__)
&& defined(__LP64__) && ! defined( __SANITIZE_ADDRESS__ )
#define EIGEN_GLIBC_MALLOC_ALREADY_ALIGNED 1
#else
#define EIGEN_GLIBC_MALLOC_ALREADY_ALIGNED 0
@@ -52,6 +56,8 @@
#define EIGEN_MALLOC_ALREADY_ALIGNED 0
#endif
#endif
#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