Mercurialcrosstool-ng / annotate
summary | shortlog | changelog | graph | tags | branches | files | changeset | file | latest | revisions | annotate | diff | raw | help
patches/glibc/ports-2.12.1/630-mips_shn_undef-hack.patch
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Sat Jan 04 01:02:57 2014 +0100 (2014-01-04)
changeset 3271 c65dc9b98841
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>
yann@2437 
     1
 
diff -durN glibc-2.12.1.orig/elf/dl-lookup.c glibc-2.12.1/elf/dl-lookup.c
yann@2437 
     2
 
--- glibc-2.12.1.orig/elf/dl-lookup.c	2009-03-30 23:14:32.000000000 +0200
yann@2437 
     3
 
+++ glibc-2.12.1/elf/dl-lookup.c	2009-11-13 00:51:36.000000000 +0100
yann@2437 
     4
 
@@ -301,6 +301,12 @@
yann@2437 
     5
 
 	      /* FALLTHROUGH */
yann@2437 
     6
 
 	    case STB_GLOBAL:
yann@2437 
     7
 
	    success:
yann@2437 
     8
 
+#ifdef __mips__
yann@2437 
     9
 
+	      /* HACK: MIPS marks its lazy evaluation stubs with SHN_UNDEF
yann@2437 
    10
 
+		 symbols, we skip them. */
yann@2437 
    11
 
+	      if (sym->st_shndx == SHN_UNDEF)
yann@2437 
    12
 
+		break;
yann@2437 
    13
 
+#endif
yann@2437 
    14
 
 	      /* Global definition.  Just what we need.  */
yann@2437 
    15
 
 	      result->s = sym;
yann@2437 
    16
 
 	      result->m = (struct link_map *) map;
crosstool-ng