[Patch, Fortran, committed] Fix some comment typos

[Tobias Burnus <burnus at net-b dot de>]

Jim Meyering found a couple of typos by running "misspell-check" on GCC, 
cf. http://gcc.gnu.org/ml/gcc-patches/2012-05/msg01910.html - Thanks for 
doing so!

I have now corrected those typos in libgfortran and gcc/fortran - plus a 
couple of more. (I have also changed "targetted" to "targeted" - even 
though the former is perfectly valid British English, sorry.)

Committed as Rev. 188000.

Tobias

PS: It's nice that Vim's spell checker only marks misspelling in 
comments and literal constants. (It does so by showing a red background, 
which makes checking .c files a relatively quick task.)
2012-05-29  Tobias Burnus  <burnus@net-b.de>

	* decl.c: Fix comment typos.
	* expr.c: Ditto.
	* frontend-passes.c: Ditto.
	* match.c: Ditto.
	* resolve.c: Ditto.
	* trans-array.c: Ditto.
	* trans-common.c: Ditto.
	* trans-intrinsic.c: Ditto.
	* trans-types.c: Ditto.

2012-05-29  Tobias Burnus  <burnus@net-b.de>

	* io/io.h: Fix comment typos.
	* io/list_read.c: Ditto.

diff --git a/gcc/fortran/decl.c b/gcc/fortran/decl.c
index e166bc9..2fd02b3 100644
--- a/gcc/fortran/decl.c
+++ b/gcc/fortran/decl.c
@@ -586,7 +586,7 @@ cleanup:
 /************************ Declaration statements *********************/
 
 
-/* Auxilliary function to merge DIMENSION and CODIMENSION array specs.  */
+/* Auxiliary function to merge DIMENSION and CODIMENSION array specs.  */
 
 static void
 merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy)
@@ -1715,7 +1715,7 @@ match_pointer_init (gfc_expr **init, int procptr)
       return MATCH_ERROR;
     }
 
-  /* Match NULL() initilization.  */
+  /* Match NULL() initialization.  */
   m = gfc_match_null (init);
   if (m != MATCH_NO)
     return m;
@@ -2235,7 +2235,7 @@ kind_expr:
      C interoperable kind (and store the fact).	 */
   if (e->ts.is_c_interop == 1)
     {
-      /* Mark this as c interoperable if being declared with one
+      /* Mark this as C interoperable if being declared with one
 	 of the named constants from iso_c_binding.  */
       ts->is_c_interop = e->ts.is_iso_c;
       ts->f90_type = e->ts.f90_type;
@@ -2533,10 +2533,10 @@ done:
   ts->kind = kind == 0 ? gfc_default_character_kind : kind;
   ts->deferred = deferred;
 
-  /* We have to know if it was a c interoperable kind so we can
+  /* We have to know if it was a C interoperable kind so we can
      do accurate type checking of bind(c) procs, etc.  */
   if (kind != 0)
-    /* Mark this as c interoperable if being declared with one
+    /* Mark this as C interoperable if being declared with one
        of the named constants from iso_c_binding.  */
     ts->is_c_interop = is_iso_c;
   else if (len != NULL)
@@ -2766,7 +2766,7 @@ gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag)
   /* Search for the name but allow the components to be defined later.  If
      type = -1, this typespec has been seen in a function declaration but
      the type could not be accessed at that point.  The actual derived type is
-     stored in a symtree with the first letter of the name captialized; the
+     stored in a symtree with the first letter of the name capitalized; the
      symtree with the all lower-case name contains the associated
      generic function.  */
   dt_name = gfc_get_string ("%c%s",
@@ -3200,7 +3200,7 @@ gfc_match_import (void)
 	  if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym)))
 	    {
 	      /* The actual derived type is stored in a symtree with the first
-		 letter of the name captialized; the symtree with the all
+		 letter of the name capitalized; the symtree with the all
 		 lower-case name contains the associated generic function. */
 	      st = gfc_new_symtree (&gfc_current_ns->sym_root,
 			gfc_get_string ("%c%s",
@@ -3844,7 +3844,7 @@ set_binding_label (const char **dest_label, const char *sym_name,
     }
 
   if (curr_binding_label)
-    /* Binding label given; store in temp holder til have sym.  */
+    /* Binding label given; store in temp holder till have sym.  */
     *dest_label = curr_binding_label;
   else
     {
@@ -7864,7 +7864,7 @@ match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc)
   bool seen_ptr = false;
   match m = MATCH_YES;
 
-  /* Intialize to defaults.  Do so even before the MATCH_NO check so that in
+  /* Initialize to defaults.  Do so even before the MATCH_NO check so that in
      this case the defaults are in there.  */
   ba->access = ACCESS_UNKNOWN;
   ba->pass_arg = NULL;
diff --git a/gcc/fortran/expr.c b/gcc/fortran/expr.c
index 93d5df6..bde62d5 100644
--- a/gcc/fortran/expr.c
+++ b/gcc/fortran/expr.c
@@ -711,7 +711,7 @@ gfc_copy_shape (mpz_t *shape, int rank)
 
 
 /* Copy a shape array excluding dimension N, where N is an integer
-   constant expression.  Dimensions are numbered in fortran style --
+   constant expression.  Dimensions are numbered in Fortran style --
    starting with ONE.
 
    So, if the original shape array contains R elements
@@ -4405,7 +4405,7 @@ gfc_has_ultimate_pointer (gfc_expr *e)
 
 /* Check whether an expression is "simply contiguous", cf. F2008, 6.5.4.
    Note: A scalar is not regarded as "simply contiguous" by the standard.
-   if bool is not strict, some futher checks are done - for instance,
+   if bool is not strict, some further checks are done - for instance,
    a "(::1)" is accepted.  */
 
 bool
@@ -4482,7 +4482,7 @@ gfc_is_simply_contiguous (gfc_expr *expr, bool strict)
 	return false;
 
       /* Following the standard, "(::1)" or - if known at compile time -
-	 "(lbound:ubound)" are not simply contigous; if strict
+	 "(lbound:ubound)" are not simply contiguous; if strict
 	 is false, they are regarded as simply contiguous.  */
       if (ar->stride[i] && (strict || ar->stride[i]->expr_type != EXPR_CONSTANT
 			    || ar->stride[i]->ts.type != BT_INTEGER
diff --git a/gcc/fortran/frontend-passes.c b/gcc/fortran/frontend-passes.c
index 5361d86..40ca074 100644
--- a/gcc/fortran/frontend-passes.c
+++ b/gcc/fortran/frontend-passes.c
@@ -243,7 +243,7 @@ cfe_register_funcs (gfc_expr **e, int *walk_subtrees ATTRIBUTE_UNUSED,
 }
 
 /* Returns a new expression (a variable) to be used in place of the old one,
-   with an an assignment statement before the current statement to set
+   with an assignment statement before the current statement to set
    the value of the variable. Creates a new BLOCK for the statement if
    that hasn't already been done and puts the statement, plus the
    newly created variables, in that block.  */
@@ -806,7 +806,7 @@ optimize_op (gfc_expr *e)
 {
   gfc_intrinsic_op op = e->value.op.op;
 
-  /* Only use new-style comparisions.  */
+  /* Only use new-style comparisons.  */
   switch(op)
     {
     case INTRINSIC_EQ_OS:
@@ -931,7 +931,7 @@ optimize_comparison (gfc_expr *e, gfc_intrinsic_op op)
     }
   else if (e->expr_type == EXPR_FUNCTION)
     {
-      /* One of the lexical comparision functions.  */
+      /* One of the lexical comparison functions.  */
       firstarg = e->value.function.actual;
       secondarg = firstarg->next;
       op1 = firstarg->expr;
diff --git a/gcc/fortran/match.c b/gcc/fortran/match.c
index 93d7fab..29b6428 100644
--- a/gcc/fortran/match.c
+++ b/gcc/fortran/match.c
@@ -597,7 +597,7 @@ gfc_match_name_C (const char **buffer)
   c = gfc_next_char_literal (INSTRING_WARN);
 
   /* If the user put nothing expect spaces between the quotes, it is valid
-     and simply means there is no name= specifier and the name is the fortran
+     and simply means there is no name= specifier and the name is the Fortran
      symbol name, all lowercase.  */
   if (c == '"' || c == '\'')
     {
@@ -5366,7 +5366,7 @@ gfc_match_select_type (void)
      array, which can have a reference, from other expressions that
      have references, such as derived type components, and are not
      allowed by the standard.
-     TODO; see is it is sufficent to exclude component and substring
+     TODO; see is it is sufficient to exclude component and substring
      references.  */
   class_array = expr1->expr_type == EXPR_VARIABLE
 		  && expr1->ts.type != BT_UNKNOWN
diff --git a/gcc/fortran/resolve.c b/gcc/fortran/resolve.c
index a56d3f7..3627b71 100644
--- a/gcc/fortran/resolve.c
+++ b/gcc/fortran/resolve.c
@@ -1401,7 +1401,7 @@ count_specific_procs (gfc_expr *e)
 
 
 /* See if a call to sym could possibly be a not allowed RECURSION because of
-   a missing RECURIVE declaration.  This means that either sym is the current
+   a missing RECURSIVE declaration.  This means that either sym is the current
    context itself, or sym is the parent of a contained procedure calling its
    non-RECURSIVE containing procedure.
    This also works if sym is an ENTRY.  */
@@ -5684,7 +5684,7 @@ resolve_typebound_static (gfc_expr* e, gfc_symtree** target,
       derived = e->value.compcall.base_object->ts.u.derived;
       st = NULL;
 
-      /* If necessary, go throught the inheritance chain.  */
+      /* If necessary, go through the inheritance chain.  */
       while (!st && derived)
 	{
 	  /* Look for the typebound procedure 'name'.  */
@@ -6879,7 +6879,7 @@ resolve_allocate_expr (gfc_expr *e, gfc_code *code)
   gfc_component *c;
   gfc_try t;
 
-  /* Mark the ultimost array component as being in allocate to allow DIMEN_STAR
+  /* Mark the utmost array component as being in allocate to allow DIMEN_STAR
      checking of coarrays.  */
   for (ref = e->ref; ref; ref = ref->next)
     if (ref->next == NULL)
@@ -7130,7 +7130,7 @@ resolve_allocate_expr (gfc_expr *e, gfc_code *code)
   if (dimension == 0 && codimension == 0)
     goto success;
 
-  /* Make sure the last reference node is an array specifiction.  */
+  /* Make sure the last reference node is an array specification.  */
 
   if (!ref2 || ref2->type != REF_ARRAY || ref2->u.ar.type == AR_FULL
       || (dimension && ref2->u.ar.dimen == 0))
@@ -8200,7 +8200,7 @@ resolve_select_type (gfc_code *code, gfc_namespace *old_ns)
 
       /* Chain in the new list only if it is marked as dangling.  Otherwise
 	 there is a CASE label overlap and this is already used.  Just ignore,
-	 the error is diagonsed elsewhere.  */
+	 the error is diagnosed elsewhere.  */
       if (st->n.sym->assoc->dangling)
 	{
 	  new_st->ext.block.assoc = st->n.sym->assoc;
@@ -9366,7 +9366,7 @@ resolve_code (gfc_code *code, gfc_namespace *ns)
 	    case EXEC_OMP_WORKSHARE:
 	      omp_workshare_save = omp_workshare_flag;
 	      omp_workshare_flag = 1;
-	      /* FALLTHROUGH */
+	      /* FALL THROUGH */
 	    default:
 	      gfc_resolve_blocks (code->block, ns);
 	      break;
diff --git a/gcc/fortran/trans-array.c b/gcc/fortran/trans-array.c
index 02bb38d..2534462 100644
--- a/gcc/fortran/trans-array.c
+++ b/gcc/fortran/trans-array.c
@@ -37,7 +37,7 @@ along with GCC; see the file COPYING3.  If not see
    descriptors and data pointers are also translated.
 
    If the expression is an assignment, we must then resolve any dependencies.
-   In fortran all the rhs values of an assignment must be evaluated before
+   In Fortran all the rhs values of an assignment must be evaluated before
    any assignments take place.  This can require a temporary array to store the
    values.  We also require a temporary when we are passing array expressions
    or vector subscripts as procedure parameters.
@@ -973,7 +973,7 @@ get_array_ref_dim_for_loop_dim (gfc_ss *ss, int loop_dim)
 
    'eltype' == NULL signals that the temporary should be a class object.
    The 'initial' expression is used to obtain the size of the dynamic
-   type; otehrwise the allocation and initialisation proceeds as for any
+   type; otherwise the allocation and initialisation proceeds as for any
    other expression
 
    PRE, POST, INITIAL, DYNAMIC and DEALLOC are as for
@@ -1754,7 +1754,7 @@ gfc_trans_array_constructor_value (stmtblock_t * pblock, tree type,
 	  tmp = build1_v (LABEL_EXPR, exit_label);
 	  gfc_add_expr_to_block (&implied_do_block, tmp);
 
-	  /* Finishe the implied-do loop.  */
+	  /* Finish the implied-do loop.  */
 	  tmp = gfc_finish_block(&implied_do_block);
 	  gfc_add_expr_to_block(pblock, tmp);
 
@@ -1765,7 +1765,7 @@ gfc_trans_array_constructor_value (stmtblock_t * pblock, tree type,
 }
 
 
-/* A catch-all to obtain the string length for anything that is not a
+/* A catch-all to obtain the string length for anything that is not
    a substring of non-constant length, a constant, array or variable.  */
 
 static void
@@ -4323,7 +4323,7 @@ temporary:
 
 /* Browse through each array's information from the scalarizer and set the loop
    bounds according to the "best" one (per dimension), i.e. the one which
-   provides the most information (constant bounds, shape, etc).  */
+   provides the most information (constant bounds, shape, etc.).  */
 
 static void
 set_loop_bounds (gfc_loopinfo *loop)
@@ -4367,7 +4367,7 @@ set_loop_bounds (gfc_loopinfo *loop)
 	    }
 	  else
 	    {
-	      /* Silence unitialized warnings.  */
+	      /* Silence uninitialized warnings.  */
 	      specinfo = NULL;
 	      spec_dim = 0;
 	    }
@@ -4906,7 +4906,7 @@ gfc_array_init_size (tree descriptor, int rank, int corank, tree * poffset,
     }
 
   /* The stride is the number of elements in the array, so multiply by the
-     size of an element to get the total size.  Obviously, if there ia a
+     size of an element to get the total size.  Obviously, if there is a
      SOURCE expression (expr3) we must use its element size.  */
   if (expr3_elem_size != NULL_TREE)
     tmp = expr3_elem_size;
@@ -6382,7 +6382,7 @@ gfc_conv_expr_descriptor (gfc_se * se, gfc_expr * expr, gfc_ss * ss)
 
       /* A transformational function return value will be a temporary
 	 array descriptor.  We still need to go through the scalarizer
-	 to create the descriptor.  Elemental functions ar handled as
+	 to create the descriptor.  Elemental functions are handled as
 	 arbitrary expressions, i.e. copy to a temporary.  */
 
       if (se->direct_byref)
@@ -7423,7 +7423,7 @@ structure_alloc_comps (gfc_symbol * der_type, tree decl,
 	case DEALLOCATE_ALLOC_COMP:
 
 	  /* gfc_deallocate_scalar_with_status calls gfc_deallocate_alloc_comp
-	     (ie. this function) so generate all the calls and suppress the
+	     (i.e. this function) so generate all the calls and suppress the
 	     recursion from here, if necessary.  */
 	  called_dealloc_with_status = false;
 	  gfc_init_block (&tmpblock);
@@ -8455,7 +8455,7 @@ gfc_reverse_ss (gfc_ss * ss)
 }
 
 
-/* Given an expression refering to a procedure, return the symbol of its
+/* Given an expression referring to a procedure, return the symbol of its
    interface.  We can't get the procedure symbol directly as we have to handle
    the case of (deferred) type-bound procedures.  */
 
diff --git a/gcc/fortran/trans-common.c b/gcc/fortran/trans-common.c
index ce7114f..695c4f5 100644
--- a/gcc/fortran/trans-common.c
+++ b/gcc/fortran/trans-common.c
@@ -86,7 +86,7 @@ along with GCC; see the file COPYING3.  If not see
    Each segment is described by a chain of segment_info structures.  Each
    segment_info structure describes the extents of a single variable within
    the segment.  This list is maintained in the order the elements are
-   positioned withing the segment.  If two elements have the same starting
+   positioned within the segment.  If two elements have the same starting
    offset the smaller will come first.  If they also have the same size their
    ordering is undefined. 
    
diff --git a/gcc/fortran/trans-intrinsic.c b/gcc/fortran/trans-intrinsic.c
index bfbebf3..04d6caa 100644
--- a/gcc/fortran/trans-intrinsic.c
+++ b/gcc/fortran/trans-intrinsic.c
@@ -43,7 +43,7 @@ along with GCC; see the file COPYING3.  If not see
 /* Only for gfc_trans_assign and gfc_trans_pointer_assign.  */
 #include "trans-stmt.h"
 
-/* This maps fortran intrinsic math functions to external library or GCC
+/* This maps Fortran intrinsic math functions to external library or GCC
    builtin functions.  */
 typedef struct GTY(()) gfc_intrinsic_map_t {
   /* The explicit enum is required to work around inadequacies in the
@@ -1579,7 +1579,7 @@ conv_intrinsic_cobound (gfc_se * se, gfc_expr * expr)
 	}
 
 
-      /* Substract 1 to get to zero based and add dimensions.  */
+      /* Subtract 1 to get to zero based and add dimensions.  */
       switch (arg->expr->rank)
 	{
 	case 0:
diff --git a/gcc/fortran/trans-types.c b/gcc/fortran/trans-types.c
index 21a94fd..aa50e3d 100644
--- a/gcc/fortran/trans-types.c
+++ b/gcc/fortran/trans-types.c
@@ -1957,7 +1957,7 @@ gfc_nonrestricted_type (tree t)
 {
   tree ret = t;
 
-  /* If the type isn't layed out yet, don't copy it.  If something
+  /* If the type isn't laid out yet, don't copy it.  If something
      needs it for real it should wait until the type got finished.  */
   if (!TYPE_SIZE (t))
     return t;
diff --git a/libgfortran/io/io.h b/libgfortran/io/io.h
index 6b54af1..3b4b34a 100644
--- a/libgfortran/io/io.h
+++ b/libgfortran/io/io.h
@@ -1,10 +1,10 @@
 /* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
-   2011
+   2011, 2012
    Free Software Foundation, Inc.
    Contributed by Andy Vaught
    F2003 I/O support contributed by Jerry DeLisle
 
-This file is part of the GNU Fortran 95 runtime library (libgfortran).
+This file is part of the GNU Fortran runtime library (libgfortran).
 
 Libgfortran is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -72,7 +72,7 @@ typedef struct array_loop_spec
 }
 array_loop_spec;
 
-/* A stucture to build a hash table for format data.  */
+/* A structure to build a hash table for format data.  */
 
 #define FORMAT_HASH_SIZE 16
 
@@ -400,7 +400,7 @@ typedef struct st_parameter_dt
 	  unsigned at_eol : 1;
 	  unsigned comma_flag : 1;
 	  /* A namelist specific flag used in the list directed library
-	     to flag that calls are being made from namelist read (eg. to
+	     to flag that calls are being made from namelist read (e.g. to
 	     ignore comments or to treat '/' as a terminator)  */
 	  unsigned namelist_mode : 1;
 	  /* A namelist specific flag used in the list directed library
diff --git a/libgfortran/io/list_read.c b/libgfortran/io/list_read.c
index b0c4e5f..6155d97 100644
--- a/libgfortran/io/list_read.c
+++ b/libgfortran/io/list_read.c
@@ -3074,7 +3074,7 @@ find_nml_name:
   if (dtp->u.p.nml_read_error)
     goto find_nml_name;
 
-  /* A trailing space is required, we give a little lattitude here, 10.9.1.  */ 
+  /* A trailing space is required, we give a little latitude here, 10.9.1.  */ 
   c = next_char (dtp);
   if (!is_separator(c) && c != '!')
     {