Update.

1999-06-06  Ulrich Drepper  <drepper@cygnus.com>

	* malloc/malloc.c: Introduce local variable __libc_getpagesize to
	avoid multiple calls to getpagesize() which might be a syscall.

1999-06-06  Philip Blundell  <philb@gnu.org>

	* stdio-common/tstscanf.c (main): Test the half-word format "%hd".

1999-06-06  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* manual/install.texi (Running make install): Correct typo in
	dynamic linker invocation.

1999-06-05  Philip Blundell  <philb@gnu.org>

	* sysdeps/arm/dl-machine.h (elf_machine_load_address): Fix
	problems with GOT addressing.

1999-06-05  Wolfram Gloger  <wmglo@dent.med.uni-muenchen.de>

	* malloc/malloc.c (check_action): Change into bitmap so that both
	diagnostic and abort can be requested by setting it to 3.
	(mALLOC_SET_STATe): Disable malloc checking if necessary.

ChangeLog

@@ -1,3 +1,28 @@
+1999-06-06  Ulrich Drepper  <drepper@cygnus.com>
+
+	* malloc/malloc.c: Introduce local variable __libc_getpagesize to
+	avoid multiple calls to getpagesize() which might be a syscall.
+
+1999-06-06  Philip Blundell  <philb@gnu.org>
+
+	* stdio-common/tstscanf.c (main): Test the half-word format "%hd".
+
+1999-06-06  Andreas Jaeger  <aj@arthur.rhein-neckar.de>
+
+	* manual/install.texi (Running make install): Correct typo in
+	dynamic linker invocation.
+
+1999-06-05  Philip Blundell  <philb@gnu.org>
+
+	* sysdeps/arm/dl-machine.h (elf_machine_load_address): Fix
+	problems with GOT addressing.
+
+1999-06-05  Wolfram Gloger  <wmglo@dent.med.uni-muenchen.de>
+
+	* malloc/malloc.c (check_action): Change into bitmap so that both
+	diagnostic and abort can be requested by setting it to 3.
+	(mALLOC_SET_STATe): Disable malloc checking if necessary.
+
 1999-06-03  Ulrich Drepper  <drepper@cygnus.com>
 
 	* configure.in: Few changes for HPUX.

FAQ.in

@@ -454,7 +454,7 @@ US.
 	the libc.so which comes with glibc all I get is a core dump.
 
 {UD} On Linux, gcc sets the dynamic linker to /lib/ld-linux.so.1 unless the
-user specifies a -dynamic-linker argument.  This is the name of the libc5
+user specifies a --dynamic-linker argument.  This is the name of the libc5
 dynamic linker, which does not work with glibc.
 
 For casual use of GNU libc you can just specify to the linker

malloc/malloc.c

@@ -852,6 +852,8 @@ Void_t *(*__morecore)() = __default_morecore;
 
 #endif
 
+static size_t __libc_pagesize;
+
 #define MORECORE (*__morecore)
 #define MORECORE_FAILURE 0
 #define MORECORE_CLEARS 1
@@ -860,7 +862,7 @@ Void_t *(*__morecore)() = __default_morecore;
 #define mremap  __mremap
 #define mprotect __mprotect
 #undef malloc_getpagesize
-#define malloc_getpagesize __getpagesize()
+#define malloc_getpagesize __libc_pagesize
 
 #else /* _LIBC */
 
@@ -1654,6 +1656,7 @@ ptmalloc_init __MALLOC_P((void))
   /* Initialize the pthreads interface. */
   if (__pthread_initialize != NULL)
     __pthread_initialize();
+  __libc_getpagesize = __getpagesize();
 #endif
   mutex_init(&main_arena.mutex);
   mutex_init(&list_lock);
@@ -1780,7 +1783,7 @@ __malloc_check_init()
   __free_hook = free_check;
   __realloc_hook = realloc_check;
   __memalign_hook = memalign_check;
-  if(check_action == 1)
+  if(check_action & 1)
     fprintf(stderr, "malloc: using debugging hooks\n");
 }
 
@@ -4068,7 +4071,11 @@ int mALLOPt(param_number, value) int param_number; int value;
    the heap contents are saved/restored via some other method.  The
    primary example for this is GNU Emacs with its `dumping' procedure.
    `Hook' function pointers are never saved or restored by these
-   functions. */
+   functions, with two exceptions: If malloc checking was in use when
+   malloc_get_state() was called, then malloc_set_state() calls
+   __malloc_check_init() if possible; if malloc checking was not in
+   use in the recorded state but the user requested malloc checking,
+   then the hooks are reset to 0.  */
 
 #define MALLOC_STATE_MAGIC   0x444c4541l
 #define MALLOC_STATE_VERSION (0*0x100l + 1l) /* major*0x100 + minor */
@@ -4196,10 +4203,18 @@ mALLOC_SET_STATe(msptr) Void_t* msptr;
   /* add version-dependent code here */
   if (ms->version >= 1) {
 #if defined _LIBC || defined MALLOC_HOOKS
-    /* Check whether it is safe to enable malloc checking.  */
+    /* Check whether it is safe to enable malloc checking, or whether
+       it is necessary to disable it.  */
     if (ms->using_malloc_checking && !using_malloc_checking &&
 	!disallow_malloc_check)
       __malloc_check_init ();
+    else if (!ms->using_malloc_checking && using_malloc_checking) {
+      __malloc_hook = 0;
+      __free_hook = 0;
+      __realloc_hook = 0;
+      __memalign_hook = 0;
+      using_malloc_checking = 0;
+    }
 #endif
   }
 
@@ -4319,13 +4334,11 @@ top_check()
   if((char*)t + chunksize(t) == sbrk_base + sbrked_mem ||
      t == initial_top(&main_arena)) return 0;
 
-  switch(check_action) {
+  if(check_action & 1)
-  case 1:
     fprintf(stderr, "malloc: top chunk is corrupt\n");
-    break;
+  if(check_action & 2)
-  case 2:
     abort();
-  }
+
   /* Try to set up a new top chunk. */
   brk = MORECORE(0);
   front_misalign = (unsigned long)chunk2mem(brk) & MALLOC_ALIGN_MASK;
@@ -4374,13 +4387,10 @@ free_check(mem, caller) Void_t* mem; const Void_t *caller;
   p = mem2chunk_check(mem);
   if(!p) {
     (void)mutex_unlock(&main_arena.mutex);
-    switch(check_action) {
+    if(check_action & 1)
-    case 1:
       fprintf(stderr, "free(): invalid pointer %p!\n", mem);
-      break;
+    if(check_action & 2)
-    case 2:
       abort();
-    }
     return;
   }
 #if HAVE_MMAP

manual/install.texi

@@ -236,7 +236,7 @@ install}, or you will end up with a mixture of header files from both
 libraries, and you won't be able to compile anything.  You may also need
 to reconfigure GCC to work with the new library.  The easiest way to do
 that is to figure out the compiler switches to make it work again
-(@samp{-Wl,-dynamic-linker=/lib/ld-linux.so.2} should work on Linux
+(@samp{-Wl,--dynamic-linker=/lib/ld-linux.so.2} should work on Linux
 systems) and use them to recompile gcc.  You can also edit the specs
 file (@file{/usr/lib/gcc-lib/@var{TARGET}/@var{VERSION}/specs}), but
 that is a bit of a black art.

stdio-common/tstscanf.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1996, 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 96, 97, 98, 99 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -235,5 +235,20 @@ main (int argc, char **argv)
       }
   }
 
+  fputs ("Test 7:\n", stdout);
+  {
+    short a[2] = { -1, -1 };
+    int res;
+
+    res = sscanf ("32767 1234", "%hd %hd", &a[0], &a[1]);
+    printf ("res = %d, a[0] = %d, a[1] = %d\n", res, a[0], a[1]);
+
+    if (res != 2 || a[0] != 32767 || a[1] != 1234)
+      {
+	fputs ("test failed!\n", stdout);
+	result = 1;
+      }
+  }
+
   exit (result);
 }

sysdeps/arm/dl-machine.h

@@ -52,22 +52,14 @@ elf_machine_dynamic (void)
 
 
 /* Return the run-time load address of the shared object.  */
-// patb
 static inline Elf32_Addr __attribute__ ((unused))
 elf_machine_load_address (void)
 {
-  Elf32_Addr addr;
+  extern void __dl_start asm ("_dl_start");
-  asm (" ldr ip,.L1
+  Elf32_Addr got_addr = (Elf32_Addr) &__dl_start;
-  	ldr r3,.L3
+  Elf32_Addr pcrel_addr;
-	add r3, r3, sl
+  asm ("adr %0, _dl_start" : "=r" (pcrel_addr));
-  	ldr ip,[sl, ip]
+  return pcrel_addr - got_addr;
-  	sub ip, r3, ip
-  	b .L2
-  	.L1: .word _dl_start(GOT)
-	.L3: .word _dl_start(GOTOFF)
-  	.L2: mov %0, ip"
-       : "=r" (addr) : : "ip", "r3");
-  return addr;
 }