source: scripts/fetch/eglibc/2.10.1/05-localedef_segfault@ dda2263

Description: Fixes Segfault when using localdef.
             This problem is only noticed when using PaX
             and some architectures besides x86.
             See debian bug # 231438

             Rediffed for 2.8 by Joe Ciccone
             Rediffed for 2.9 by Joe Ciccone

diff -Naur glibc-2.8.orig/locale/programs/3level.h glibc-2.8/locale/programs/3level.h
--- glibc-2.8.orig/locale/programs/3level.h     2007-07-15 20:54:59.000000000 -0400
+++ glibc-2.8/locale/programs/3level.h  2008-09-20 12:09:34.000000000 -0400
@@ -203,6 +203,42 @@
        }
     }
 }
+
+/* GCC ATM seems to do a poor job with pointers to nested functions passed
+   to inlined functions.  Help it a little bit with this hack.  */
+#define wchead_table_iterate(tp, fn) \
+do                                                                           \
+  {                                                                          \
+    struct wchead_table *t = (tp);                                           \
+    uint32_t index1;                                                         \
+    for (index1 = 0; index1 < t->level1_size; index1++)                              \
+      {                                                                              \
+       uint32_t lookup1 = t->level1[index1];                                 \
+       if (lookup1 != ((uint32_t) ~0))                                       \
+         {                                                                   \
+           uint32_t lookup1_shifted = lookup1 << t->q;                       \
+           uint32_t index2;                                                  \
+           for (index2 = 0; index2 < (1 << t->q); index2++)                  \
+             {                                                               \
+               uint32_t lookup2 = t->level2[index2 + lookup1_shifted];       \
+               if (lookup2 != ((uint32_t) ~0))                               \
+                 {                                                           \
+                   uint32_t lookup2_shifted = lookup2 << t->p;               \
+                   uint32_t index3;                                          \
+                   for (index3 = 0; index3 < (1 << t->p); index3++)          \
+                     {                                                       \
+                       struct element_t *lookup3                             \
+                         = t->level3[index3 + lookup2_shifted];              \
+                       if (lookup3 != NULL)                                  \
+                         fn ((((index1 << t->q) + index2) << t->p) + index3, \
+                             lookup3);                                       \
+                     }                                                       \
+                 }                                                           \
+             }                                                               \
+         }                                                                   \
+      }                                                                              \
+  } while (0)
+
 #endif
 
 #ifndef NO_FINALIZE