patches/glibc/ports-2.6.1/100-ARM-NPTL.patch
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"Yann E. MORIN" <yann.morin.1998@free.fr> |
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Sat Jan 04 01:02:57 2014 +0100 (2014-01-04) |
| changeset 3271 |
c65dc9b98841 |
| parent 365 |
ba634892cc18
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| permissions |
-rw-r--r-- |
cc/gcc: diable libsanitizer without NPTL
gcc-4.8 comes with a new library to sanitise memory access:
- heap-, stack-, and global-buffer overflow, use-after-free
- data-races between threads
This library requires some _np parts of the API, which are not
implemented in the (old) LinuxThreads, which is still available
in uClibc.
Since NPTL requires a i486 or above, i386 are stuck with using LT,
which precludes building the libsanitizer.
Disable libsanitizer, a bit like libatomic is.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Niels Penneman <niels@penneman.org>
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yann@365
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diff -durN glibc-2.6.1.orig/glibc-ports-2.6.1/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h glibc-2.6.1/glibc-ports-2.6.1/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h
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yann@367
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--- glibc-2.6.1.orig/glibc-ports-2.6.1/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h 2005-11-16 20:22:59.000000000 +0100
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yann@367
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+++ glibc-2.6.1/glibc-ports-2.6.1/sysdeps/unix/sysv/linux/arm/nptl/sysdep-cancel.h 2007-09-06 13:53:16.000000000 +0200
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yann@365
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@@ -126,3 +126,9 @@
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yann@365
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# define NO_CANCELLATION 1
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yann@365
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yann@365
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#endif
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yann@365
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+
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yann@365
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+#ifndef __ASSEMBLER__
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yann@365
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+# define RTLD_SINGLE_THREAD_P \
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yann@365
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+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
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yann@365
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+ header.multiple_threads) == 0, 1)
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yann@365
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+#endif
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