diff --git a/libiberty/configure.ac b/libiberty/configure.ac
index 3380819..716664a 100644
--- a/libiberty/configure.ac
+++ b/libiberty/configure.ac
@@ -272,8 +272,10 @@ AC_HEADER_TIME
 
 libiberty_AC_DECLARE_ERRNO
 
-# Determine the size of an int for struct fibnode.
+# Determine the size of an int for struct fibnode and both int and size_t
+# for obstack.h.
 AC_CHECK_SIZEOF([int])
+AC_CHECK_SIZEOF([size_t])
 
 # Look for a 64-bit type.
 AC_MSG_CHECKING([for a 64-bit type])
diff --git a/libiberty/obstacks.texi b/libiberty/obstacks.texi
index adcd810..5cab523 100644
--- a/libiberty/obstacks.texi
+++ b/libiberty/obstacks.texi
@@ -168,7 +168,7 @@ The most direct way to allocate an object in an obstack is with
 
 @comment obstack.h
 @comment GNU
-@deftypefun {void *} obstack_alloc (struct obstack *@var{obstack-ptr}, int @var{size})
+@deftypefun {void *} obstack_alloc (struct obstack *@var{obstack-ptr}, size_t @var{size})
 This allocates an uninitialized block of @var{size} bytes in an obstack
 and returns its address.  Here @var{obstack-ptr} specifies which obstack
 to allocate the block in; it is the address of the @code{struct obstack}
@@ -202,7 +202,7 @@ To allocate a block with specified contents, use the function
 
 @comment obstack.h
 @comment GNU
-@deftypefun {void *} obstack_copy (struct obstack *@var{obstack-ptr}, void *@var{address}, int @var{size})
+@deftypefun {void *} obstack_copy (struct obstack *@var{obstack-ptr}, void *@var{address}, size_t @var{size})
 This allocates a block and initializes it by copying @var{size}
 bytes of data starting at @var{address}.  It calls
 @code{obstack_alloc_failed_handler} if allocation of memory by
@@ -211,7 +211,7 @@ bytes of data starting at @var{address}.  It calls
 
 @comment obstack.h
 @comment GNU
-@deftypefun {void *} obstack_copy0 (struct obstack *@var{obstack-ptr}, void *@var{address}, int @var{size})
+@deftypefun {void *} obstack_copy0 (struct obstack *@var{obstack-ptr}, void *@var{address}, size_t @var{size})
 Like @code{obstack_copy}, but appends an extra byte containing a null
 character.  This extra byte is not counted in the argument @var{size}.
 @end deftypefun
@@ -222,7 +222,7 @@ example of its use:
 
 @smallexample
 char *
-obstack_savestring (char *addr, int size)
+obstack_savestring (char *addr, size_t size)
 @{
   return obstack_copy0 (&myobstack, addr, size);
 @}
@@ -347,14 +347,14 @@ already added to the growing object will become part of the other object.
 
 @comment obstack.h
 @comment GNU
-@deftypefun void obstack_blank (struct obstack *@var{obstack-ptr}, int @var{size})
+@deftypefun void obstack_blank (struct obstack *@var{obstack-ptr}, size_t @var{size})
 The most basic function for adding to a growing object is
 @code{obstack_blank}, which adds space without initializing it.
 @end deftypefun
 
 @comment obstack.h
 @comment GNU
-@deftypefun void obstack_grow (struct obstack *@var{obstack-ptr}, void *@var{data}, int @var{size})
+@deftypefun void obstack_grow (struct obstack *@var{obstack-ptr}, void *@var{data}, size_t @var{size})
 To add a block of initialized space, use @code{obstack_grow}, which is
 the growing-object analogue of @code{obstack_copy}.  It adds @var{size}
 bytes of data to the growing object, copying the contents from
@@ -363,7 +363,7 @@ bytes of data to the growing object, copying the contents from
 
 @comment obstack.h
 @comment GNU
-@deftypefun void obstack_grow0 (struct obstack *@var{obstack-ptr}, void *@var{data}, int @var{size})
+@deftypefun void obstack_grow0 (struct obstack *@var{obstack-ptr}, void *@var{data}, size_t @var{size})
 This is the growing-object analogue of @code{obstack_copy0}.  It adds
 @var{size} bytes copied from @var{data}, followed by an additional null
 character.
@@ -413,7 +413,7 @@ declared as follows:
 
 @comment obstack.h
 @comment GNU
-@deftypefun int obstack_object_size (struct obstack *@var{obstack-ptr})
+@deftypefun size_t obstack_object_size (struct obstack *@var{obstack-ptr})
 This function returns the current size of the growing object, in bytes.
 Remember to call this function @emph{before} finishing the object.
 After it is finished, @code{obstack_object_size} will return zero.
@@ -456,7 +456,7 @@ in the current chunk.  It is declared as follows:
 
 @comment obstack.h
 @comment GNU
-@deftypefun int obstack_room (struct obstack *@var{obstack-ptr})
+@deftypefun size_t obstack_room (struct obstack *@var{obstack-ptr})
 This returns the number of bytes that can be added safely to the current
 growing object (or to an object about to be started) in obstack
 @var{obstack} using the fast growth functions.
@@ -490,7 +490,7 @@ containing the value of @var{data} to the growing object in obstack
 
 @comment obstack.h
 @comment GNU
-@deftypefun void obstack_blank_fast (struct obstack *@var{obstack-ptr}, int @var{size})
+@deftypefun void obstack_blank_fast (struct obstack *@var{obstack-ptr}, size_t @var{size})
 The function @code{obstack_blank_fast} adds @var{size} bytes to the
 growing object in obstack @var{obstack-ptr} without initializing them.
 @end deftypefun
@@ -511,11 +511,11 @@ Here is an example:
 @smallexample
 @group
 void
-add_string (struct obstack *obstack, const char *ptr, int len)
+add_string (struct obstack *obstack, const char *ptr, size_t len)
 @{
   while (len > 0)
     @{
-      int room = obstack_room (obstack);
+      size_t room = obstack_room (obstack);
       if (room == 0)
         @{
           /* @r{Not enough room. Add one character slowly,}
@@ -570,7 +570,7 @@ returns the same value as @code{obstack_base}.
 
 @comment obstack.h
 @comment GNU
-@deftypefun int obstack_object_size (struct obstack *@var{obstack-ptr})
+@deftypefun size_t obstack_object_size (struct obstack *@var{obstack-ptr})
 This function returns the size in bytes of the currently growing object.
 This is equivalent to
 
@@ -661,7 +661,7 @@ not to waste too much memory in the portion of the last chunk not yet used.
 
 @comment obstack.h
 @comment GNU
-@deftypefn Macro int obstack_chunk_size (struct obstack *@var{obstack-ptr})
+@deftypefn Macro size_t obstack_chunk_size (struct obstack *@var{obstack-ptr})
 This returns the chunk size of the given obstack.
 @end deftypefn
 
@@ -689,15 +689,15 @@ argument.
 @item void obstack_init (struct obstack *@var{obstack-ptr})
 Initialize use of an obstack.  @xref{Creating Obstacks}.
 
-@item void *obstack_alloc (struct obstack *@var{obstack-ptr}, int @var{size})
+@item void *obstack_alloc (struct obstack *@var{obstack-ptr}, size_t @var{size})
 Allocate an object of @var{size} uninitialized bytes.
 @xref{Allocation in an Obstack}.
 
-@item void *obstack_copy (struct obstack *@var{obstack-ptr}, void *@var{address}, int @var{size})
+@item void *obstack_copy (struct obstack *@var{obstack-ptr}, void *@var{address}, size_t @var{size})
 Allocate an object of @var{size} bytes, with contents copied from
 @var{address}.  @xref{Allocation in an Obstack}.
 
-@item void *obstack_copy0 (struct obstack *@var{obstack-ptr}, void *@var{address}, int @var{size})
+@item void *obstack_copy0 (struct obstack *@var{obstack-ptr}, void *@var{address}, size_t @var{size})
 Allocate an object of @var{size}+1 bytes, with @var{size} of them copied
 from @var{address}, followed by a null character at the end.
 @xref{Allocation in an Obstack}.
@@ -706,15 +706,15 @@ from @var{address}, followed by a null character at the end.
 Free @var{object} (and everything allocated in the specified obstack
 more recently than @var{object}).  @xref{Freeing Obstack Objects}.
 
-@item void obstack_blank (struct obstack *@var{obstack-ptr}, int @var{size})
+@item void obstack_blank (struct obstack *@var{obstack-ptr}, size_t @var{size})
 Add @var{size} uninitialized bytes to a growing object.
 @xref{Growing Objects}.
 
-@item void obstack_grow (struct obstack *@var{obstack-ptr}, void *@var{address}, int @var{size})
+@item void obstack_grow (struct obstack *@var{obstack-ptr}, void *@var{address}, size_t @var{size})
 Add @var{size} bytes, copied from @var{address}, to a growing object.
 @xref{Growing Objects}.
 
-@item void obstack_grow0 (struct obstack *@var{obstack-ptr}, void *@var{address}, int @var{size})
+@item void obstack_grow0 (struct obstack *@var{obstack-ptr}, void *@var{address}, size_t @var{size})
 Add @var{size} bytes, copied from @var{address}, to a growing object,
 and then add another byte containing a null character.  @xref{Growing
 Objects}.
@@ -727,11 +727,11 @@ Add one byte containing @var{data-char} to a growing object.
 Finalize the object that is growing and return its permanent address.
 @xref{Growing Objects}.
 
-@item int obstack_object_size (struct obstack *@var{obstack-ptr})
+@item size_t obstack_object_size (struct obstack *@var{obstack-ptr})
 Get the current size of the currently growing object.  @xref{Growing
 Objects}.
 
-@item void obstack_blank_fast (struct obstack *@var{obstack-ptr}, int @var{size})
+@item void obstack_blank_fast (struct obstack *@var{obstack-ptr}, size_t @var{size})
 Add @var{size} uninitialized bytes to a growing object without checking
 that there is enough room.  @xref{Extra Fast Growing}.
 
@@ -739,7 +739,7 @@ that there is enough room.  @xref{Extra Fast Growing}.
 Add one byte containing @var{data-char} to a growing object without
 checking that there is enough room.  @xref{Extra Fast Growing}.
 
-@item int obstack_room (struct obstack *@var{obstack-ptr})
+@item size_t obstack_room (struct obstack *@var{obstack-ptr})
 Get the amount of room now available for growing the current object.
 @xref{Extra Fast Growing}.
 
@@ -747,7 +747,7 @@ Get the amount of room now available for growing the current object.
 The mask used for aligning the beginning of an object.  This is an
 lvalue.  @xref{Obstacks Data Alignment}.
 
-@item int obstack_chunk_size (struct obstack *@var{obstack-ptr})
+@item size_t obstack_chunk_size (struct obstack *@var{obstack-ptr})
 The size for allocating chunks.  This is an lvalue.  @xref{Obstack Chunks}.
 
 @item void *obstack_base (struct obstack *@var{obstack-ptr})
diff --git a/binutils/configure.ac b/binutils/configure.ac
index ff0d4dc..8a2b04c 100644
--- a/binutils/configure.ac
+++ b/binutils/configure.ac
@@ -186,6 +186,10 @@ fi
 AC_CHECK_DECLS([environ, fprintf, getc_unlocked, getenv,
 		sbrk, snprintf, stpcpy, strnlen, strstr, vsnprintf])
 
+# Determine the size of int and size_t for obstack.h.
+AC_CHECK_SIZEOF([int])
+AC_CHECK_SIZEOF([size_t])
+
 # Link in zlib if we can.  This allows us to read compressed debug
 # sections.  This is used only by readelf.c (objdump uses bfd for
 # reading compressed sections).
diff --git a/gas/config/bfin-parse.y b/gas/config/bfin-parse.y
index fe742ad..435beea 100644
--- a/gas/config/bfin-parse.y
+++ b/gas/config/bfin-parse.y
@@ -20,7 +20,6 @@
 %{
 
 #include "as.h"
-#include <obstack.h>
 
 #include "bfin-aux.h"  /* Opcode generating auxiliaries.  */
 #include "libbfd.h"
diff --git a/gas/config/obj-aout.c b/gas/config/obj-aout.c
index 28369c0..93ea904 100644
--- a/gas/config/obj-aout.c
+++ b/gas/config/obj-aout.c
@@ -23,7 +23,6 @@
 #include "as.h"
 #undef NO_RELOC
 #include "aout/aout64.h"
-#include "obstack.h"
 
 void
 obj_aout_frob_symbol (symbolS *sym, int *punt ATTRIBUTE_UNUSED)
diff --git a/gas/config/obj-coff.c b/gas/config/obj-coff.c
index 79c8f88..4e7b9b7 100644
--- a/gas/config/obj-coff.c
+++ b/gas/config/obj-coff.c
@@ -22,7 +22,6 @@
 
 #include "as.h"
 #include "safe-ctype.h"
-#include "obstack.h"
 #include "subsegs.h"
 #include "struc-symbol.h"
 
diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c
index e59f27b..e2ef99e 100644
--- a/gas/config/obj-elf.c
+++ b/gas/config/obj-elf.c
@@ -266,7 +266,7 @@ elf_file_symbol (const char *s, int appfile)
       || (symbol_rootP->bsym->flags & BSF_FILE) == 0)
     {
       symbolS *sym;
-      unsigned int name_length;
+      size_t name_length;
 
       sym = symbol_new (s, absolute_section, 0, NULL);
       symbol_set_frag (sym, &zero_address_frag);
diff --git a/gas/config/obj-som.c b/gas/config/obj-som.c
index 47acab8..55a9b6a 100644
--- a/gas/config/obj-som.c
+++ b/gas/config/obj-som.c
@@ -24,7 +24,6 @@
 #include "as.h"
 #include "subsegs.h"
 #include "aout/stab_gnu.h"
-#include "obstack.h"
 
 static int version_seen = 0;
 static int copyright_seen = 0;
diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index c7ace79..0a65b9d 100644
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -1681,7 +1681,7 @@ symbol_locate (symbolS * symbolP,
 	       valueT valu,	/* Symbol value.  */
 	       fragS * frag)	/* Associated fragment.  */
 {
-  unsigned int name_length;
+  size_t name_length;
   char *preserved_copy_of_name;
 
   name_length = strlen (name) + 1;	/* +1 for \0.  */
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 2f13238..fd3910b 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -3379,7 +3379,7 @@ symbol_locate (symbolS *    symbolP,
 	       valueT	    valu,	/* Symbol value.  */
 	       fragS *	    frag)	/* Associated fragment.	 */
 {
-  unsigned int name_length;
+  size_t name_length;
   char * preserved_copy_of_name;
 
   name_length = strlen (name) + 1;   /* +1 for \0.  */
diff --git a/gas/config/tc-bfin.c b/gas/config/tc-bfin.c
index 8366cbf..447a477 100644
--- a/gas/config/tc-bfin.c
+++ b/gas/config/tc-bfin.c
@@ -948,7 +948,7 @@ int ninsns;
 int count_insns;
 
 static void *
-allocate (int n)
+allocate (size_t n)
 {
   return obstack_alloc (&mempool, n);
 }
diff --git a/gas/config/tc-i960.c b/gas/config/tc-i960.c
index 7595e1d..91469eb 100644
--- a/gas/config/tc-i960.c
+++ b/gas/config/tc-i960.c
@@ -64,7 +64,6 @@
 #include "as.h"
 
 #include "safe-ctype.h"
-#include "obstack.h"
 
 #include "opcode/i960.h"
 
diff --git a/gas/config/tc-mmix.c b/gas/config/tc-mmix.c
index 7740ee2..82f48ae 100644
--- a/gas/config/tc-mmix.c
+++ b/gas/config/tc-mmix.c
@@ -3007,7 +3007,7 @@ mmix_handle_mmixal (void)
 	 it the same alignment and address as the associated instruction.  */
 
       /* Make room for the label including the ending nul.  */
-      int len_0 = s - label + 1;
+      size_t len_0 = s - label + 1;
 
       /* Save this label on the MMIX symbol obstack.  Saving it on an
 	 obstack is needless for "IS"-pseudos, but it's harmless and we
diff --git a/gas/config/tc-rl78.c b/gas/config/tc-rl78.c
index 0cd7e5b..f2382b7 100644
--- a/gas/config/tc-rl78.c
+++ b/gas/config/tc-rl78.c
@@ -20,7 +20,6 @@
 
 #include "as.h"
 #include "struc-symbol.h"
-#include "obstack.h"
 #include "safe-ctype.h"
 #include "dwarf2dbg.h"
 #include "libbfd.h"
diff --git a/gas/config/tc-rx.c b/gas/config/tc-rx.c
index c4842f9..0d7e1d5 100644
--- a/gas/config/tc-rx.c
+++ b/gas/config/tc-rx.c
@@ -20,7 +20,6 @@
 
 #include "as.h"
 #include "struc-symbol.h"
-#include "obstack.h"
 #include "safe-ctype.h"
 #include "dwarf2dbg.h"
 #include "libbfd.h"
diff --git a/gas/config/tc-score.c b/gas/config/tc-score.c
index e8c8b6d..72597a0 100644
--- a/gas/config/tc-score.c
+++ b/gas/config/tc-score.c
@@ -6315,7 +6315,7 @@ s3_build_score_ops_hsh (void)
   for (i = 0; i < sizeof (s3_score_insns) / sizeof (struct s3_asm_opcode); i++)
     {
       const struct s3_asm_opcode *insn = s3_score_insns + i;
-      unsigned len = strlen (insn->template_name);
+      size_t len = strlen (insn->template_name);
       struct s3_asm_opcode *new_opcode;
       char *template_name;
       new_opcode = (struct s3_asm_opcode *)
@@ -6344,7 +6344,7 @@ s3_build_dependency_insn_hsh (void)
   for (i = 0; i < sizeof (s3_insn_to_dependency_table) / sizeof (s3_insn_to_dependency_table[0]); i++)
     {
       const struct s3_insn_to_dependency *tmp = s3_insn_to_dependency_table + i;
-      unsigned len = strlen (tmp->insn_name);
+      size_t len = strlen (tmp->insn_name);
       struct s3_insn_to_dependency *new_i2n;
 
       new_i2n = (struct s3_insn_to_dependency *)
diff --git a/gas/config/tc-score7.c b/gas/config/tc-score7.c
index 7bf0ad6..ae15a04 100644
--- a/gas/config/tc-score7.c
+++ b/gas/config/tc-score7.c
@@ -5090,7 +5090,7 @@ s7_build_score_ops_hsh (void)
   for (i = 0; i < sizeof (s7_score_insns) / sizeof (struct s7_asm_opcode); i++)
     {
       const struct s7_asm_opcode *insn = s7_score_insns + i;
-      unsigned len = strlen (insn->template_name);
+      size_t len = strlen (insn->template_name);
       struct s7_asm_opcode *new_opcode;
       char *template_name;
       new_opcode = (struct s7_asm_opcode *)
@@ -5119,7 +5119,7 @@ s7_build_dependency_insn_hsh (void)
   for (i = 0; i < ARRAY_SIZE (s7_insn_to_dependency_table); i++)
     {
       const struct s7_insn_to_dependency *tmp = s7_insn_to_dependency_table + i;
-      unsigned len = strlen (tmp->insn_name);
+      size_t len = strlen (tmp->insn_name);
       struct s7_insn_to_dependency *new_i2d;
 
       new_i2d = (struct s7_insn_to_dependency *)
diff --git a/gas/config/tc-tic4x.c b/gas/config/tc-tic4x.c
index 7559ad5..904a68c 100644
--- a/gas/config/tc-tic4x.c
+++ b/gas/config/tc-tic4x.c
@@ -43,7 +43,6 @@
 #include "safe-ctype.h"
 #include "opcode/tic4x.h"
 #include "subsegs.h"
-#include "obstack.h"
 
 /* OK, we accept a syntax similar to the other well known C30
    assembly tools.  With TIC4X_ALT_SYNTAX defined we are more
diff --git a/gas/configure.ac b/gas/configure.ac
index cc4fc54..5a93d82 100644
--- a/gas/configure.ac
+++ b/gas/configure.ac
@@ -735,6 +735,10 @@ dnl AC_C_CONST
 AC_FUNC_ALLOCA
 AC_C_INLINE
 
+# Determine the size of int and size_t for obstack.h.
+AC_CHECK_SIZEOF([int])
+AC_CHECK_SIZEOF([size_t])
+
 # VMS doesn't have unlink.
 AC_CHECK_FUNCS(unlink remove, break)
 AC_CHECK_FUNCS(sbrk setlocale)
diff --git a/gas/expr.c b/gas/expr.c
index b39c70d..eb7255f 100644
--- a/gas/expr.c
+++ b/gas/expr.c
@@ -27,7 +27,6 @@
 
 #include "as.h"
 #include "safe-ctype.h"
-#include "obstack.h"
 
 #ifdef HAVE_LIMITS_H
 #include <limits.h>
diff --git a/gas/frags.c b/gas/frags.c
index e14099d..defa853 100644
--- a/gas/frags.c
+++ b/gas/frags.c
@@ -94,12 +94,12 @@ frag_alloc (struct obstack *ob)
    do not return. Do not set up any fields of *now_frag.  */
 
 void
-frag_grow (unsigned int nchars)
+frag_grow (size_t nchars)
 {
   if (obstack_room (&frchain_now->frch_obstack) < nchars)
     {
-      long oldc;
-      long newc;
+      size_t oldc;
+      size_t newc;
 
       /* Try to allocate a bit more than needed right now.  But don't do
          this if we would waste too much memory.  Especially necessary
@@ -111,8 +111,8 @@ frag_grow (unsigned int nchars)
       newc += SIZEOF_STRUCT_FRAG;
 
       /* Check for possible overflow.  */
-      if (newc < 0)
-        as_fatal (_("can't extend frag %u chars"), nchars);
+      if (newc < nchars)
+        as_fatal (_("can't extend frag %lu chars"), (unsigned long) nchars);
 
       /* Force to allocate at least NEWC bytes, but not less than the
          default.  */
@@ -152,7 +152,7 @@ frag_grow (unsigned int nchars)
    of frchain_now.  */
 
 void
-frag_new (int old_frags_var_max_size
+frag_new (size_t old_frags_var_max_size
 	  /* Number of chars (already allocated on obstack frags) in
 	     variable_length part of frag.  */)
 {
@@ -204,7 +204,7 @@ frag_new (int old_frags_var_max_size
    frag_now_growth past the new chars.  */
 
 char *
-frag_more (int nchars)
+frag_more (size_t nchars)
 {
   register char *retval;
 
@@ -219,8 +219,8 @@ frag_more (int nchars)
    new frag.  */
 
 static void
-frag_var_init (relax_stateT type, int max_chars, int var,
-               relax_substateT subtype, symbolS *symbol, offsetT offset,
+frag_var_init (relax_stateT type, size_t max_chars, size_t var,
+	       relax_substateT subtype, symbolS *symbol, offsetT offset,
                char *opcode)
 {
   frag_now->fr_var = var;
@@ -250,8 +250,9 @@ frag_var_init (relax_stateT type, int max_chars, int var,
    to write into.  */
 
 char *
-frag_var (relax_stateT type, int max_chars, int var, relax_substateT subtype,
-	  symbolS *symbol, offsetT offset, char *opcode)
+frag_var (relax_stateT type, size_t max_chars, size_t var,
+	  relax_substateT subtype, symbolS *symbol, offsetT offset,
+	  char *opcode)
 {
   register char *retval;
 
@@ -267,7 +268,7 @@ frag_var (relax_stateT type, int max_chars, int var, relax_substateT subtype,
 	No call to frag_grow is done.  */
 
 char *
-frag_variant (relax_stateT type, int max_chars, int var,
+frag_variant (relax_stateT type, size_t max_chars, size_t var,
 	      relax_substateT subtype, symbolS *symbol, offsetT offset,
 	      char *opcode)
 {
@@ -291,7 +292,7 @@ frag_wane (register fragS *fragP)
 
 /* Return the number of bytes by which the current frag can be grown.  */
 
-int
+size_t
 frag_room (void)
 {
   return obstack_room (&frchain_now->frch_obstack);
@@ -336,7 +337,7 @@ frag_align (int alignment, int fill_character, int max)
 
 void
 frag_align_pattern (int alignment, const char *fill_pattern,
-		    int n_fill, int max)
+		    size_t n_fill, int max)
 {
   char *p;
 
diff --git a/gas/frags.h b/gas/frags.h
index 2f9e1b5..bdc3c9d 100644
--- a/gas/frags.h
+++ b/gas/frags.h
@@ -127,27 +127,27 @@ extern void frag_append_1_char (int);
 
 void frag_init (void);
 fragS *frag_alloc (struct obstack *);
-void frag_grow (unsigned int nchars);
-char *frag_more (int nchars);
+void frag_grow (size_t nchars);
+char *frag_more (size_t nchars);
 void frag_align (int alignment, int fill_character, int max);
 void frag_align_pattern (int alignment, const char *fill_pattern,
-			 int n_fill, int max);
+			 size_t n_fill, int max);
 void frag_align_code (int alignment, int max);
-void frag_new (int old_frags_var_max_size);
+void frag_new (size_t old_frags_var_max_size);
 void frag_wane (fragS * fragP);
-int frag_room (void);
+size_t frag_room (void);
 
 char *frag_variant (relax_stateT type,
-		    int max_chars,
-		    int var,
+		    size_t max_chars,
+		    size_t var,
 		    relax_substateT subtype,
 		    symbolS * symbol,
 		    offsetT offset,
 		    char *opcode);
 
 char *frag_var (relax_stateT type,
-		int max_chars,
-		int var,
+		size_t max_chars,
+		size_t var,
 		relax_substateT subtype,
 		symbolS * symbol,
 		offsetT offset,
diff --git a/gas/listing.c b/gas/listing.c
index 0192dd0..57425fe 100644
--- a/gas/listing.c
+++ b/gas/listing.c
@@ -89,7 +89,6 @@
 
 #include "as.h"
 #include "filenames.h"
-#include "obstack.h"
 #include "safe-ctype.h"
 #include "input-file.h"
 #include "subsegs.h"
diff --git a/gas/symbols.c b/gas/symbols.c
index 9da0468..6af8604 100644
--- a/gas/symbols.c
+++ b/gas/symbols.c
@@ -104,7 +104,7 @@ symbol_new (const char *name, segT segment, valueT valu, fragS *frag)
 static char *
 save_symbol_name (const char *name)
 {
-  unsigned int name_length;
+  size_t name_length;
   char *ret;
 
   name_length = strlen (name) + 1;	/* +1 for \0.  */
diff --git a/gdb/charset.c b/gdb/charset.c
index 6f413a2..05d8fee 100644
--- a/gdb/charset.c
+++ b/gdb/charset.c
@@ -503,7 +503,7 @@ convert_between_encodings (const char *from, const char *to,
       old_size = obstack_object_size (output);
       obstack_blank (output, space_request);
 
-      outp = obstack_base (output) + old_size;
+      outp = (char *) obstack_base (output) + old_size;
       outleft = space_request;
 
       r = iconv (desc, &inp, &inleft, &outp, &outleft);
diff --git a/gdb/configure.ac b/gdb/configure.ac
index a2ac15f..d53506b 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -664,6 +664,10 @@ AC_SUBST(READLINE_TEXI_INCFLAG)
 # This is typedeffed to GDB_CORE_ADDR in jit-reader.h
 TARGET_PTR=
 
+# Determine the size of int and size_t for obstack.h.
+AC_CHECK_SIZEOF([int])
+AC_CHECK_SIZEOF([size_t])
+
 AC_CHECK_SIZEOF(unsigned long long)
 AC_CHECK_SIZEOF(unsigned long)
 AC_CHECK_SIZEOF(unsigned __int128)
diff --git a/gdb/cp-valprint.c b/gdb/cp-valprint.c
index 3e1d6ed..93b95b3 100644
--- a/gdb/cp-valprint.c
+++ b/gdb/cp-valprint.c
@@ -208,8 +208,8 @@ cp_print_value_fields (struct type *type, struct type *real_type,
     fprintf_filtered (stream, "<No data fields>");
   else
     {
-      int statmem_obstack_initial_size = 0;
-      int stat_array_obstack_initial_size = 0;
+      size_t statmem_obstack_initial_size = 0;
+      size_t stat_array_obstack_initial_size = 0;
       struct type *vptr_basetype = NULL;
       int vptr_fieldno;
 
@@ -370,7 +370,7 @@ cp_print_value_fields (struct type *type, struct type *real_type,
 
       if (dont_print_statmem == 0)
 	{
-	  int obstack_final_size =
+	  size_t obstack_final_size =
            obstack_object_size (&dont_print_statmem_obstack);
 
 	  if (obstack_final_size > statmem_obstack_initial_size)
@@ -387,7 +387,7 @@ cp_print_value_fields (struct type *type, struct type *real_type,
 
 	  if (last_set_recurse != recurse)
 	    {
-	      int obstack_final_size =
+	      size_t obstack_final_size =
 		obstack_object_size (&dont_print_stat_array_obstack);
 	      
 	      if (obstack_final_size > stat_array_obstack_initial_size)
diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c
index e302ebb..a66cbef 100644
--- a/gdb/hppa-tdep.c
+++ b/gdb/hppa-tdep.c
@@ -221,7 +221,7 @@ record_text_segment_lowaddr (bfd *abfd, asection *section, void *data)
 static void
 internalize_unwinds (struct objfile *objfile, struct unwind_table_entry *table,
 		     asection *section, unsigned int entries,
-		     unsigned int size, CORE_ADDR text_offset)
+		     size_t size, CORE_ADDR text_offset)
 {
   /* We will read the unwind entries into temporary memory, then
      fill in the actual unwind table.  */
@@ -320,7 +320,7 @@ static void
 read_unwind_info (struct objfile *objfile)
 {
   asection *unwind_sec, *stub_unwind_sec;
-  unsigned unwind_size, stub_unwind_size, total_size;
+  size_t unwind_size, stub_unwind_size, total_size;
   unsigned index, unwind_entries;
   unsigned stub_entries, total_entries;
   CORE_ADDR text_offset;
diff --git a/gdb/jit.c b/gdb/jit.c
index a1983c9..bc31c7a 100644
--- a/gdb/jit.c
+++ b/gdb/jit.c
@@ -637,7 +637,8 @@ finalize_symtab (struct gdb_symtab *stab, struct objfile *objfile)
   struct symtab *symtab;
   struct gdb_block *gdb_block_iter, *gdb_block_iter_tmp;
   struct block *block_iter;
-  int actual_nblocks, i, blockvector_size;
+  int actual_nblocks, i;
+  size_t blockvector_size;
   CORE_ADDR begin, end;
   struct blockvector *bv;
 
@@ -650,9 +651,9 @@ finalize_symtab (struct gdb_symtab *stab, struct objfile *objfile)
   /* Copy over the linetable entry if one was provided.  */
   if (stab->linetable)
     {
-      int size = ((stab->linetable->nitems - 1)
-                  * sizeof (struct linetable_entry)
-                  + sizeof (struct linetable));
+      size_t size = ((stab->linetable->nitems - 1)
+		     * sizeof (struct linetable_entry)
+		     + sizeof (struct linetable));
       LINETABLE (symtab) = obstack_alloc (&objfile->objfile_obstack, size);
       memcpy (LINETABLE (symtab), stab->linetable, size);
     }
diff --git a/gdb/symmisc.c b/gdb/symmisc.c
index de2e166..eb606fa 100644
--- a/gdb/symmisc.c
+++ b/gdb/symmisc.c
@@ -143,9 +143,11 @@ print_objfile_statistics (void)
     if (OBJSTAT (objfile, sz_strtab) > 0)
       printf_filtered (_("  Space used by a.out string tables: %d\n"),
 		       OBJSTAT (objfile, sz_strtab));
-    printf_filtered (_("  Total memory used for objfile obstack: %d\n"),
+    printf_filtered (_("  Total memory used for objfile obstack: %lu\n"),
+		     (unsigned long)
 		     obstack_memory_used (&objfile->objfile_obstack));
-    printf_filtered (_("  Total memory used for BFD obstack: %d\n"),
+    printf_filtered (_("  Total memory used for BFD obstack: %lu\n"),
+		     (unsigned long)
 		     obstack_memory_used (&objfile->per_bfd->storage_obstack));
     printf_filtered (_("  Total memory used for psymbol cache: %d\n"),
 		     bcache_memory_used (psymbol_bcache_get_bcache
diff --git a/gdb/utils.c b/gdb/utils.c
index 6f47cb0..f4cb9bc 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -3096,7 +3096,7 @@ gdb_sign_extend (LONGEST value, int bit)
 void *
 hashtab_obstack_allocate (void *data, size_t size, size_t count)
 {
-  unsigned int total = size * count;
+  size_t total = size * count;
   void *ptr = obstack_alloc ((struct obstack *) data, total);
 
   memset (ptr, 0, total);
diff --git a/ld/configure.ac b/ld/configure.ac
index c81ccfe..19ab480 100644
--- a/ld/configure.ac
+++ b/ld/configure.ac
@@ -267,6 +267,10 @@ else
 fi
 AC_SUBST(STRINGIFY)
 
+# Determine the size of int and size_t for obstack.h.
+AC_CHECK_SIZEOF([int])
+AC_CHECK_SIZEOF([size_t])
+
 # target-specific stuff:
 
 all_targets=