Changes to fix malloc size problem.

[splint.git] / src / ctype.c

diff --git a/src/ctype.c b/src/ctype.c
index 6a3bcd663dad4bb4036e7101cf13181398278984..d3af6069b33f852a44dc1948df37c2763c07e3e8 100644 (file)
--- a/src/ctype.c
+++ b/src/ctype.c
@@ -1,6 +1,6 @@
 /*
 ** Splint - annotation-assisted static program checker
-** Copyright (C) 1994-2002 University of Virginia,
+** Copyright (C) 1994-2003 University of Virginia,
 **         Massachusetts Institute of Technology
 **
 ** This program is free software; you can redistribute it and/or modify it
@@ -154,9 +154,21 @@ ctype_createUser (typeId u)
 ctype
 ctype_createAbstract (typeId u)
 {
- /* requires: ctype_createAbstract (u) is never called more than once for any u. */
- /*           [ tested by cttable_addFullSafe, not really required ]            */
-  return (cttable_addFullSafe (ctentry_makeNew (CTK_PLAIN, ctbase_createAbstract (u))));
+  /* requires: ctype_createAbstract (u) is never called more than once for any u. */
+  /*           [ tested by cttable_addFullSafe, not really required ]            */
+
+  return (cttable_addFullSafe
+         (ctentry_makeNew (CTK_PLAIN, ctbase_createAbstract (u))));
+}
+
+ctype
+ctype_createNumAbstract (typeId u)
+{
+  /* requires: ctype_createAbstract (u) is never called more than once for any u. */
+  /*           [ tested by cttable_addFullSafe, not really required ]            */
+
+  return (cttable_addFullSafe 
+         (ctentry_makeNew (CTK_PLAIN, ctbase_createNumAbstract (u))));
 }
 
 int
@@ -235,7 +247,8 @@ ctype_realishType (ctype c)
 bool
 ctype_isUA (ctype c)
 {
-  return (!ctype_isUnknown (c) && ctbase_isUA (ctype_getCtbase (c)));
+  return (!ctype_isUnknown (c) 
+         && ctbase_isUA (ctype_getCtbase (c)));
 }
 
 bool
@@ -254,6 +267,16 @@ ctype_isAbstract (ctype c)
                || ctype_isAbstract (ctype_getConjB (c))))));
 }
 
+bool
+ctype_isNumAbstract (ctype c)
+{
+  return (!ctype_isUnknown (c) 
+         && ((ctype_isPlain (c) && ctbase_isNumAbstract (ctype_getCtbaseSafe (c))) ||
+             (ctype_isConj (c) &&
+              (ctype_isNumAbstract (ctype_getConjA (c)) 
+               || ctype_isNumAbstract (ctype_getConjB (c))))));
+}
+
 bool
 ctype_isImmutableAbstract (ctype t)
 {
@@ -269,6 +292,15 @@ ctype_isRealAbstract (ctype c)
            ctype_isRealAbstract (ctype_getConjB (c)))));
 }
 
+bool
+ctype_isRealNumAbstract (ctype c)
+{
+  return (ctype_isNumAbstract (ctype_realType (c)) ||
+         (ctype_isConj (c) && 
+          (ctype_isRealNumAbstract (ctype_getConjA (c)) || 
+           ctype_isRealNumAbstract (ctype_getConjB (c)))));
+}
+
 /*
 ** primitive creators
 */
@@ -1060,7 +1092,7 @@ static bool
     {
       ctype cbr = ctype_getConjA (*c);
 
-     /*drl bee: si*/   if ((*pred) (cbr))
+       if ((*pred) (cbr))
        {
          if ((*pred) (ctype_getConjB (*c)))
            {
@@ -1137,7 +1169,11 @@ ctype_makeConjAux (ctype c1, ctype c2, bool isExplicit)
 ctype
 ctype_makeExplicitConj (ctype c1, ctype c2)
 {
-  if (ctype_isFunction (c1) && !ctype_isFunction (c2))
+  if (ctype_isAnytype (c1) || ctype_isAnytype (c2))
+    {
+      return ctype_makeAnytype ();
+    }
+  else if (ctype_isFunction (c1) && !ctype_isFunction (c2))
     {
       ctype ret = ctype_makeExplicitConj (ctype_getReturnType (c1), c2);
 
@@ -1166,6 +1202,27 @@ static ctype ivb = ctype_unknown;  /* int | void * | bool */
 static ctype ivbf = ctype_unknown; /* int | void * | bool | float */
 static ctype cuc = ctype_unknown;  /* char | unsigned char */
 
+static ctype cany = ctype_unknown;
+
+ctype 
+ctype_makeAnytype ()
+{
+  if (cany == ctype_unknown)
+    {
+      cany = ctype_makeConj (ctype_unknown, ctype_dne);
+      llassert (ctype_isAnytype (cany));
+    }
+
+  DPRINTF (("make anytype: %s", ctype_unparse (cany)));
+  return cany;
+}
+
+bool 
+ctype_isAnytype (ctype c)
+{
+  return (c == cany);
+} 
+
 static void
 ctype_recordConj (ctype c)
 {
@@ -1286,7 +1343,15 @@ ctype_makeConj (ctype c1, ctype c2)
 
   DPRINTF (("Make conj: %s / %s", ctype_unparse (c1), ctype_unparse (c2)));
 
-  if (ctype_isUnknown (c1)) 
+  if (ctype_isAnytype (c1))
+    {
+      return c1;
+    }
+  else if (ctype_isAnytype (c2))
+    {
+      return c2;
+    }
+  else if (ctype_isUnknown (c1)) 
     {
       return c2;
     }
@@ -1477,7 +1542,6 @@ ctype_makeConj (ctype c1, ctype c2)
        {
          ;
        }
-
       
       return (cttable_addComplex (ctbase_makeConj (c1, c2, FALSE)));
     }
@@ -1786,7 +1850,7 @@ ctype_typeId (ctype c)
 cstring
 ctype_unparseDeclaration (ctype c, /*@only@*/ cstring name)
 {
-  llassert (! (ctype_isElips (c) || ctype_isMissingParamsMarker (c)));
+  llassert (!(ctype_isElips (c) || ctype_isMissingParamsMarker (c)));
 
   if (ctype_isUnknown (c))
     {
@@ -1809,14 +1873,14 @@ ctype_unparse (ctype c)
     {
       return cstring_makeLiteralTemp ("-");
     }
-  else if (ctype_isUnknown (c))
-    {
-      return cstring_makeLiteralTemp ("?");
-    }
   else if (ctype_isAnytype (c))
     {
       return cstring_makeLiteralTemp ("<any>");
     }
+  else if (ctype_isUnknown (c))
+    {
+      return cstring_makeLiteralTemp ("?");
+    }
   else
     {
       /*@-modobserver@*/
@@ -1890,8 +1954,7 @@ ctype_dump (ctype c)
   
   if (ctype_isUA (c))
     {
-      cstring tname = usymtab_getTypeEntryName 
-        (usymtab_convertId (ctype_typeId (c)));
+      cstring tname = usymtab_getTypeEntryName (usymtab_convertTypeId (ctype_typeId (c)));
       
       if (cstring_equal (tname, context_getBoolName ()))
        {
@@ -1913,7 +1976,6 @@ ctype_getBaseType (ctype c)
 
   switch (ctentry_getKind (cte))
     {
-    case CTK_ANYTYPE:
     case CTK_UNKNOWN:
     case CTK_INVALID:
     case CTK_PLAIN:
@@ -1937,6 +1999,7 @@ ctype_getBaseType (ctype c)
              case CT_ENUMLIST:
              case CT_BOOL:
              case CT_ABST:
+             case CT_NUMABST:
              case CT_FCN:
              case CT_STRUCT:
              case CT_UNION:
@@ -1965,13 +2028,14 @@ ctype_getBaseType (ctype c)
 }
 
 ctype
-ctype_adjustPointers (int np, ctype c)
+ctype_adjustPointers (pointers p, ctype c)
 {
-  
+  int np = pointers_depth (p);
+
   if (ctype_isFunction (c))
     {
       c = ctype_makeParamsFunction
-        (ctype_adjustPointers (np, ctype_getReturnType (c)),
+        (ctype_adjustPointers (p, ctype_getReturnType (c)),
         uentryList_copy (ctype_argsFunction (c)));
     }
   else
@@ -2179,6 +2243,16 @@ ctype_createForwardUnion (cstring n)
   return (ct);
 }
 
+ctype
+ctype_createForwardEnum (cstring n)
+{
+  uentry ue  = uentry_makeEnumTag (n, ctype_unknown, fileloc_undefined);
+  ctype ct = usymtab_supForwardTypeEntry (ue);
+
+  cstring_free (n);
+  return (ct);
+}
+
 ctype
 ctype_removePointers (ctype c)
 {
@@ -2221,7 +2295,10 @@ bool ctype_isRefCounted (ctype t)
 
 bool ctype_isVisiblySharable (ctype t)
 {
-  if (ctype_isUnknown (t)) return TRUE;
+  if (ctype_isUnknown (t))
+    {
+      return TRUE;
+    }
 
   if (ctype_isConj (t))
     {
@@ -2237,7 +2314,14 @@ bool ctype_isVisiblySharable (ctype t)
 
          if (rt == t)
            {
-             return TRUE;
+             if (ctype_isNumAbstract (t))
+               {
+                 return FALSE;
+               }
+             else
+               {
+                 return TRUE;
+               }
            }
          else
            {
@@ -2536,18 +2620,13 @@ ctype ctype_combine (ctype dominant, ctype modifier)
   
 ctype ctype_resolve (ctype c)
 {
-  if (ctype_isUnknown (c)) 
+  if (ctype_isUnknown (c) && !ctype_isAnytype (c))
     {
+      DPRINTF (("Resolving to int: %s", ctype_unparse (c)));
       return ctype_int;
     }
-  else if (c == ctype_anytype)
-    {
-      return ctype_unknown;
-    }
-  else
-    {
-      return c;
-    }
+
+  return c;
 }
 
 ctype ctype_fromQual (qual q)
@@ -2757,3 +2836,19 @@ size_t ctype_getArraySize (ctype c)
   return size;
 }
 
+ctype ctype_biggerType (ctype c1, ctype c2)
+{
+  if (ctbase_isBigger (ctype_getCtbaseSafe (c2), ctype_getCtbaseSafe (c1)))
+    {
+      return c2;
+    }
+  else
+    {
+      return c1;
+    }
+}
+
+int ctype_getSize (ctype c)
+{
+  return ctbase_getSize (ctype_getCtbaseSafe (ctype_realType (c)));
+}