Backported selected fixes from 2007-05-{17,18,21}. cvs/fedora-glibc-2_6-2

5 files changed, 25 insertions, 44 deletions

diff --git a/malloc/Makefile b/malloc/Makefile
index c251bcfb9d..c39eae5474 100644
--- a/malloc/Makefile
+++ b/malloc/Makefile
@@ -104,7 +104,6 @@ $(objpfx)memusagestat: $(memusagestat-modules:%=$(objpfx)%.o)
 include ../Rules
 
 CFLAGS-mcheck-init.c = $(PIC-ccflag)
-CFLAGS-malloc.c += -DMALLOC_DEBUG
 
 $(objpfx)libmcheck.a: $(objpfx)mcheck-init.o
 	-rm -f $@
diff --git a/malloc/arena.c b/malloc/arena.c
index 9e3ff47347..ce64335567 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -370,9 +370,6 @@ ptmalloc_init_minimal (void)
   mp_.top_pad        = DEFAULT_TOP_PAD;
 #endif
   mp_.n_mmaps_max    = DEFAULT_MMAP_MAX;
-#if MALLOC_DEBUG
-  mp_.n_mmaps_cmax   = DEFAULT_MMAP_MAX;
-#endif
   mp_.mmap_threshold = DEFAULT_MMAP_THRESHOLD;
   mp_.trim_threshold = DEFAULT_TRIM_THRESHOLD;
   mp_.pagesize       = malloc_getpagesize;
diff --git a/malloc/hooks.c b/malloc/hooks.c
index cde3e18cbd..1e01b73afd 100644
--- a/malloc/hooks.c
+++ b/malloc/hooks.c
@@ -496,7 +496,7 @@ free_starter(mem, caller) Void_t* mem; const Void_t *caller;
    then the hooks are reset to 0.  */
 
 #define MALLOC_STATE_MAGIC   0x444c4541l
-#define MALLOC_STATE_VERSION (0*0x100l + 2l) /* major*0x100 + minor */
+#define MALLOC_STATE_VERSION (0*0x100l + 3l) /* major*0x100 + minor */
 
 struct malloc_save_state {
   long          magic;
@@ -507,9 +507,6 @@ struct malloc_save_state {
   unsigned long trim_threshold;
   unsigned long top_pad;
   unsigned int  n_mmaps_max;
-#if MALLOC_DEBUG
-  unsigned int  n_mmaps_cmax;
-#endif
   unsigned long mmap_threshold;
   int           check_action;
   unsigned long max_sbrked_mem;
@@ -553,9 +550,6 @@ public_gET_STATe(void)
   ms->trim_threshold = mp_.trim_threshold;
   ms->top_pad = mp_.top_pad;
   ms->n_mmaps_max = mp_.n_mmaps_max;
-#if MALLOC_DEBUG
-  ms->n_mmaps_cmax = mp_.n_mmaps_cmax;
-#endif
   ms->mmap_threshold = mp_.mmap_threshold;
   ms->check_action = check_action;
   ms->max_sbrked_mem = main_arena.max_system_mem;
@@ -601,8 +595,9 @@ public_sET_STATe(Void_t* msptr)
       assert(ms->av[2*i+3] == 0);
       first(b) = last(b) = b;
     } else {
-      if(i<NSMALLBINS || (largebin_index(chunksize(ms->av[2*i+2]))==i &&
-			  largebin_index(chunksize(ms->av[2*i+3]))==i)) {
+      if(ms->version >= 3 &&
+	 (i<NSMALLBINS || (largebin_index(chunksize(ms->av[2*i+2]))==i &&
+			   largebin_index(chunksize(ms->av[2*i+3]))==i))) {
 	first(b) = ms->av[2*i+2];
 	last(b) = ms->av[2*i+3];
 	/* Make sure the links to the bins within the heap are correct.  */
@@ -622,14 +617,22 @@ public_sET_STATe(Void_t* msptr)
       }
     }
   }
+  if (ms->version < 3) {
+    /* Clear fd_nextsize and bk_nextsize fields.  */
+    b = unsorted_chunks(&main_arena)->fd;
+    while (b != unsorted_chunks(&main_arena)) {
+      if (!in_smallbin_range(chunksize(b))) {
+	b->fd_nextsize = NULL;
+	b->bk_nextsize = NULL;
+      }
+      b = b->fd;
+    }
+  }
   mp_.sbrk_base = ms->sbrk_base;
   main_arena.system_mem = ms->sbrked_mem_bytes;
   mp_.trim_threshold = ms->trim_threshold;
   mp_.top_pad = ms->top_pad;
   mp_.n_mmaps_max = ms->n_mmaps_max;
-#if MALLOC_DEBUG
-  mp_.n_mmaps_cmax = ms->n_mmaps_cmax;
-#endif
   mp_.mmap_threshold = ms->mmap_threshold;
   check_action = ms->check_action;
   main_arena.max_system_mem = ms->max_sbrked_mem;
diff --git a/malloc/malloc.c b/malloc/malloc.c
index e061db94d6..0755fd8f8d 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -2358,9 +2358,6 @@ struct malloc_par {
   /* Memory map support */
   int              n_mmaps;
   int              n_mmaps_max;
-#if MALLOC_DEBUG
-  int              n_mmaps_cmax;
-#endif
   int              max_n_mmaps;
   /* the mmap_threshold is dynamic, until the user sets
      it manually, at which point we need to disable any
@@ -2572,7 +2569,7 @@ static void do_check_chunk(av, p) mstate av; mchunkptr p;
 #if HAVE_MMAP
     /* address is outside main heap  */
     if (contiguous(av) && av->top != initial_top(av)) {
-      assert(((char*)p) < min_address || ((char*)p) > max_address);
+      assert(((char*)p) < min_address || ((char*)p) >= max_address);
     }
     /* chunk is page-aligned */
     assert(((p->prev_size + sz) & (mp_.pagesize-1)) == 0);
@@ -2876,8 +2873,6 @@ static void do_check_malloc_state(mstate av)
   assert(total <= (unsigned long)(mp_.max_total_mem));
   assert(mp_.n_mmaps >= 0);
 #endif
-  assert(mp_.n_mmaps <= mp_.n_mmaps_cmax);
-  assert(mp_.n_mmaps_max <= mp_.n_mmaps_cmax);
   assert(mp_.n_mmaps <= mp_.max_n_mmaps);
 
   assert((unsigned long)(av->system_mem) <=
@@ -3475,13 +3470,6 @@ munmap_chunk(p) mchunkptr p;
     }
 
   mp_.n_mmaps--;
-#if MALLOC_DEBUG
-  if (mp_.n_mmaps_cmax > mp_.n_mmaps_max)
-    {
-      assert (mp_.n_mmaps_cmax == mp_.n_mmaps + 1);
-      mp_.n_mmaps_cmax = mp_.n_mmaps;
-    }
-#endif
   mp_.mmapped_mem -= total_size;
 
   int ret __attribute__ ((unused)) = munmap((char *)block, total_size);
@@ -5397,9 +5385,6 @@ mstate av; size_t n_elements; size_t* sizes; int opts; Void_t* chunks[];
   mp_.n_mmaps_max = 0;
   mem = _int_malloc(av, size);
   mp_.n_mmaps_max = mmx;   /* reset mmap */
-#if MALLOC_DEBUG
-  mp_.n_mmaps_cmax = mmx;
-#endif
   if (mem == 0)
     return 0;
 
@@ -5725,17 +5710,8 @@ int mALLOPt(param_number, value) int param_number; int value;
       res = 0;
     else
 #endif
-      {
-#if MALLOC_DEBUG
-	if (mp_.n_mmaps <= value)
-	  mp_.n_mmaps_cmax = value;
-	else
-	  mp_.n_mmaps_cmax = mp_.n_mmaps;
-#endif
-
-	mp_.n_mmaps_max = value;
-	mp_.no_dyn_threshold = 1;
-      }
+      mp_.n_mmaps_max = value;
+      mp_.no_dyn_threshold = 1;
     break;
 
   case M_CHECK_ACTION:
diff --git a/malloc/mcheck.c b/malloc/mcheck.c
index 9f88843445..28210068ff 100644
--- a/malloc/mcheck.c
+++ b/malloc/mcheck.c
@@ -1,5 +1,5 @@
 /* Standard debugging hooks for `malloc'.
-   Copyright (C) 1990-1997,99,2000,01,02 Free Software Foundation, Inc.
+   Copyright (C) 1990-1997,1999,2000-2002,2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written May 1989 by Mike Haertel.
 
@@ -280,6 +280,12 @@ memalignhook (__malloc_size_t alignment, __malloc_size_t size,
 static __ptr_t
 reallochook (__ptr_t ptr, __malloc_size_t size, const __ptr_t caller)
 {
+  if (size == 0)
+    {
+      freehook (ptr, caller);
+      return NULL;
+    }
+
   struct hdr *hdr;
   __malloc_size_t osize;