/*;-*-C-*-;
-** Copyright (c) Massachusetts Institute of Technology 1994-1998.
-** All Rights Reserved.
-** Unpublished rights reserved under the copyright laws of
-** the United States.
+** Splint - annotation-assisted static program checker
+** Copyright (C) 1994-2002 University of Virginia,
+** Massachusetts Institute of Technology
**
-** THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
-** OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
+** This program is free software; you can redistribute it and/or modify it
+** under the terms of the GNU General Public License as published by the
+** Free Software Foundation; either version 2 of the License, or (at your
+** option) any later version.
+**
+** This program is distributed in the hope that it will be useful, but
+** WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+**
+** The GNU General Public License is available from http://www.gnu.org/ or
+** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+** MA 02111-1307, USA.
**
-** This code is distributed freely and may be used freely under the
-** following conditions:
-**
-** 1. This notice may not be removed or altered.
-**
-** 2. Works derived from this code are not distributed for
-** commercial gain without explicit permission from MIT
-** (for permission contact lclint-request@sds.lcs.mit.edu).
+** For information on splint: info@splint.org
+** To report a bug: splint-bug@splint.org
+** For more information: http://www.splint.org
*/
%{
/*
**
** cgrammar.y
**
-** Yacc/Bison grammar for extended ANSI C used by LCLint.
+** Yacc/Bison grammar for extended ANSI C used by Splint.
**
** original grammar by Nate Osgood ---
** hacrat@catfish.lcs.mit.edu Mon Jun 14 13:06:32 1993
**
-** changes for LCLint --- handle typedef names correctly
+** changes for Splint --- handle typedef names correctly
** fix struct/union parsing bug (empty struct is accepted)
** add productions to handle macros --- require
** error correction --- main source of conflicts in grammar.
extern void swallowMacro (void);
extern void yyerror (char *);
-# include "lclintMacros.nf"
+# include "splintMacros.nf"
# include "basic.h"
# include "cscanner.h"
# include "cgrammar.h"
/*@only@*/ uentry oentry;
/*@only@*/ exprNode expr;
/*@only@*/ enumNameList enumnamelist;
- /*@only@*/ exprNodeList alist;
+ /*@only@*/ exprNodeList exprlist;
/*@only@*/ sRefSet srset;
/*@only@*/ cstringList cstringlist;
%token <tok> TSEMI TLBRACE TRBRACE TCOMMA TCOLON TASSIGN TLPAREN
%token <tok> TRPAREN TLSQBR TRSQBR TDOT TAMPERSAND TEXCL TTILDE
%token <tok> TMINUS TPLUS TMULT TDIV TPERCENT TLT TGT TCIRC TBAR TQUEST
-%token <tok> CSIZEOF CALIGNOF ARROW_OP CTYPEDEF COFFSETOF
+%token <tok> CSIZEOF CALIGNOF CTYPEOF ARROW_OP CTYPEDEF COFFSETOF
%token <tok> INC_OP DEC_OP LEFT_OP RIGHT_OP
%token <tok> LE_OP GE_OP EQ_OP NE_OP AND_OP OR_OP
%token <tok> MUL_ASSIGN DIV_ASSIGN MOD_ASSIGN ADD_ASSIGN SUB_ASSIGN
%token <tok> QSETS
%token <tok> QRELEASES
%token <tok> QPRECLAUSE
-%token <tok> QPOSTCLAUSE
+%token <tok> QPOSTCLAUSE
+%token <tok> QINVARIANT
%token <tok> QALT
%token <tok> QUNDEF QKILLED
%token <tok> QENDMACRO
-/* additional tokens introduced by lclint pre-processor. */
+/* additional tokens introduced by splint pre-processor. */
%token <tok> LLMACRO LLMACROITER LLMACROEND TENDMACRO
/* break comments: */
%token <ctyp> CGCHAR CBOOL CINT CGFLOAT CDOUBLE CVOID
%token <tok> QANYTYPE QINTEGRALTYPE QUNSIGNEDINTEGRALTYPE QSIGNEDINTEGRALTYPE
-%type <typequal> nullterminatedQualifier
%token <tok> QNULLTERMINATED
%token <tok> QSETBUFFERSIZE
%token <tok> QSETSTRINGLENGTH
%type <globsclause> globalsClause globalsClausePlain
%type <modsclause> modifiesClause modifiesClausePlain nomodsClause
-%type <warnclause> warnClause warnClausePlain
+%type <warnclause> warnClause warnClausePlain optWarnClause
%type <funcclause> conditionClause conditionClausePlain
%type <stateclause> stateClause stateClausePlain
%type <msconstraint> metaStateConstraint
%type <ntyplist> structNamedDeclList
%type <entrylist> genericParamList paramTypeList paramList idList paramIdList
-%type <alist> argumentExprList iterArgList
-%type <alist> initList
+%type <exprlist> argumentExprList iterArgList
+%type <exprlist> initList namedInitializerList namedInitializerListAux
%type <flist> structDeclList structDecl
%type <srset> locModifies modList specClauseList optSpecClauseList
%type <sr> mExpr modListExpr specClauseListExpr
%type <conL> BufConstraintList
+%type <conL> optStructInvariant
+
%type <tok> BufUnaryOp
+/*drl 1/6/2002 either /\ or && */
+%type <tok> constraintSeperator
+
%type <enumnamelist> enumeratorList
%type <cstringlist> fieldDesignator
%type <expr> compoundStmt compoundStmtAux compoundStmtRest compoundStmtAuxErr
%type <expr> expressionStmt selectionStmt iterationStmt jumpStmt iterDefIterationStmt
%type <expr> stmtErr stmtListErr compoundStmtErr expressionStmtErr
-%type <expr> iterationStmtErr initializerList initializer ifPred whilePred forPred iterWhilePred
+%type <expr> iterationStmtErr initializerList typeInitializerList initializer
+%type <expr> ifPred whilePred forPred iterWhilePred typeInitializer
+
+%type <expr> designator designatorList designation
%type <typequal> storageSpecifier typeQualifier typeModifier globQual
%type <tquallist> optGlobQuals
%type <qtyp> completeType completeTypeSpecifier optCompleteType
%type <qtyp> completeTypeSpecifierAux altType typeExpression
-/*%type <expr> lclintassertion*/
%start file
| externalDefs
externalDefs
- : externalDef
- | externalDefs externalDef
+ : externalDef { context_checkGlobalScope (); }
+ | externalDefs externalDef { context_checkGlobalScope (); }
externalDef
: fcnDef optSemi { uentry_clearDecl (); }
| iterDecl { uentry_clearDecl (); }
| macroDef { uentry_clearDecl (); }
| initializer { uentry_checkDecl (); exprNode_free ($1); }
+ | TSEMI { uentry_clearDecl (); /* evans 2002-02-08: okay to have a null statement */ }
| error { uentry_clearDecl (); }
constantDecl
| IsType TLPAREN NotType namedDecl IsType TRPAREN
{ $$ = idDecl_expectFunction ($4); }
| namedDeclBase TLSQBR TRSQBR
- { $$ = idDecl_replaceCtype ($1, ctype_makeArray (idDecl_getCtype ($1))); }
+ { $$ = idDecl_replaceCtype ($1, ctype_makeInnerArray (idDecl_getCtype ($1))); }
| namedDeclBase TLSQBR IsType constantExpr TRSQBR NotType
- {
- $$ = idDecl_replaceCtype ($1, ctype_makeFixedArray (idDecl_getCtype ($1), exprNode_getLongValue ($4)));
+ {
+ exprNode_findValue ($4);
+ idDecl_notExpectingFunction ($1);
+
+ if (exprNode_hasValue ($4))
+ {
+ $$ = idDecl_replaceCtype ($1, ctype_makeInnerFixedArray (idDecl_getCtype ($1),
+ exprNode_getLongValue ($4)));
+ }
+ else
+ {
+ $$ = idDecl_replaceCtype ($1, ctype_makeInnerArray (idDecl_getCtype ($1)));
+ }
}
| namedDeclBase PushType TLPAREN TRPAREN
{ setCurrentParams (uentryList_missingParams); }
$$ = idDecl_replaceCtype ($1, ct);
idDecl_addClauses ($$, $6);
- context_popLoc ();
+ context_popLoc ();
+ /*drl 7/25/01 added*/
+ setImplictfcnConstraints();
}
| namedDeclBase PushType TLPAREN genericParamList TRPAREN
{ setCurrentParams ($4); }
| IsType TLPAREN NotType plainNamedDecl IsType TRPAREN
{ $$ = idDecl_expectFunction ($4); }
| plainNamedDeclBase TLSQBR TRSQBR
- { $$ = idDecl_replaceCtype ($1, ctype_makeArray (idDecl_getCtype ($1))); }
+ { $$ = idDecl_replaceCtype ($1, ctype_makeInnerArray (idDecl_getCtype ($1))); }
| plainNamedDeclBase TLSQBR IsType constantExpr TRSQBR NotType
{
int value;
value = 0;
}
- $$ = idDecl_replaceCtype ($1, ctype_makeFixedArray (idDecl_getCtype ($1), value));
+ $$ = idDecl_replaceCtype ($1, ctype_makeInnerFixedArray (idDecl_getCtype ($1), value));
}
| plainNamedDeclBase PushType TLPAREN TRPAREN
{ setCurrentParams (uentryList_missingParams); }
metaStateSpecifier
: BufConstraintSrefExpr { cscanner_expectingMetaStateName (); } TCOLON metaStateName
- { cscanner_clearExpectingMetaStateName ();
- $$ = metaStateSpecifier_create ($1, $4); }
+ { cscanner_clearExpectingMetaStateName ();
+ $$ = metaStateSpecifier_create ($1, $4); }
+ | CTOK_ELIPSIS { cscanner_expectingMetaStateName (); } TCOLON metaStateName
+ { cscanner_clearExpectingMetaStateName ();
+ $$ = metaStateSpecifier_createElipsis ($4); }
metaStateExpression
: metaStateSpecifier { $$ = metaStateExpression_create ($1); }
/*drl*/
+constraintSeperator
+: TCAND
+| AND_OP
+
BufConstraintList
-: BufConstraint TCAND BufConstraintList { $$ = constraintList_add ($3, $1); }
+: BufConstraint constraintSeperator BufConstraintList { $$ = constraintList_add ($3, $1); }
| BufConstraint { $$ = constraintList_single ($1); }
BufConstraint
$$ = constraintExpr_parseMakeBinaryOp ($2, $3, $4); }
BufConstraintTerm
- : BufConstraintSrefExpr { $$ = constraintExpr_makeTermsRef($1);}
- | CCONSTANT
- {
- /* char *t; int c;
- t = cstring_toCharsSafe (exprNode_unparse($1));
- c = atoi( t );
- */
-
- $$ = constraintExpr_makeIntLiteral (exprNode_getLongValue ($1));
- }
+ : BufConstraintSrefExpr { $$ = constraintExpr_makeTermsRef ($1);}
+ | CCONSTANT { $$ = constraintExpr_makeIntLiteral (exprNode_getLongValue ($1)); }
BufConstraintSrefExpr
: id
flagId
: NEW_IDENTIFIER
+optWarnClause
+ : warnClause
+ | /* empty */ { $$ = warnClause_undefined; }
+
warnClause
: warnClausePlain QENDMACRO { $$ = $1; }
warnClausePlain
: QWARN flagSpec cconstantExpr
- { $$ = warnClause_create ($1, $2, $3); }
+ {
+ llassert (exprNode_knownStringValue ($3));
+ $$ = warnClause_create ($1, $2, cstring_copy (multiVal_forceString (exprNode_getValue ($3))));
+ exprNode_free ($3);
+ }
| QWARN flagSpec
- { $$ = warnClause_create ($1, $2, exprNode_undefined); }
+ { $$ = warnClause_create ($1, $2, cstring_undefined); }
globIdList
: globIdListExpr { $$ = globSet_single ($1); }
exprNode_checkFunctionBody ($3); $$ = $3;
context_exitInner ($3);
}
- | initializerList
- { doneParams (); context_enterInnerContext (); }
+ | { context_enterOldStyleScope (); } initializerList
+ { oldStyleDoneParams (); context_enterInnerContext (); }
compoundStmt
{
- context_exitInner ($3);
- exprNode_checkFunctionBody ($3);
- $$ = $3; /* old style */
+ exprNode_checkFunctionBody ($4);
+ $$ = $4; /* oldstyle */
+ context_exitInner ($4);
}
fcnDef
: fcnDefHdr fcnBody
{
context_setFunctionDefined (exprNode_loc ($2));
- exprNode_checkFunction (context_getHeader (), $2);
+ exprNode_checkFunction (context_getHeader (), $2);
/* DRL 8 8 2000 */
context_exitFunction ();
| TLPAREN expr TRPAREN { $$ = exprNode_addParens ($1, $2); }
| TYPE_NAME_OR_ID { $$ = exprNode_fromIdentifier (coerceId ($1)); }
| QEXTENSION { $$ = exprNode_makeError (); }
+ | TLPAREN { exprChecks_inCompoundStatementExpression (); }
+ compoundStmt TRPAREN
+ { exprChecks_leaveCompoundStatementExpression (); $$ = exprNode_compoundStatementExpression ($1, $3); }
postfixExpr
: primaryExpr
| postfixExpr NotType ARROW_OP newId IsType { $$ = exprNode_arrowAccess ($1, $3, $4); }
| postfixExpr INC_OP { $$ = exprNode_postOp ($1, $2); }
| postfixExpr DEC_OP { $$ = exprNode_postOp ($1, $2); }
-
+ | TLPAREN typeExpression TRPAREN TLBRACE typeInitializerList optComma TRBRACE
+ { /* added for C99 */ $$ = exprNode_undefined; /*@i87 no checking */ }
+
argumentExprList
: assignExpr { $$ = exprNodeList_singleton ($1); }
| argumentExprList TCOMMA assignExpr { $$ = exprNodeList_push ($1, $3); }
typeDecl
: CTYPEDEF completeTypeSpecifier { setProcessingTypedef ($2); }
- NotType namedInitializerList IsType TSEMI { unsetProcessingTypedef (); }
+ NotType namedInitializerList IsType optWarnClause TSEMI
+ { clabstract_declareType ($5, $7); }
| CTYPEDEF completeTypeSpecifier IsType TSEMI { /* in the ANSI grammar, semantics unclear */ }
| CTYPEDEF namedInitializerList IsType TSEMI { /* in the ANSI grammar, semantics unclear */ }
: { g_expectingTypeName = TRUE; context_pushLoc (); }
namedInitializerList
- : namedInitializerListAux IsType { ; }
+ : namedInitializerListAux IsType { $$ = $1; }
namedInitializerListAux
- : namedInitializer { ; }
- | namedInitializerList TCOMMA NotType namedInitializer { ; }
+ : namedInitializer { $$ = exprNodeList_singleton ($1); }
+ | namedInitializerList TCOMMA NotType namedInitializer { $$ = exprNodeList_push ($1, $4); }
optDeclarators
: /* empty */ { $$ = exprNode_makeError (); }
: assignExpr
| TLBRACE initList TRBRACE { $$ = exprNode_makeInitBlock ($1, $2); }
| TLBRACE initList TCOMMA TRBRACE { $$ = exprNode_makeInitBlock ($1, $2); }
+ | designation init { $$ = exprNode_undefined; }
+
+/*
+** Splint parses these (added in ISO C99), but no checking yet...
+*/
+designation
+ : designatorList TASSIGN { $$ = $1; }
+ | newId TCOLON { $$ = exprNode_undefined;
+ /* gcc extension, obsolete since 2.5 */ }
+
+designatorList
+ : designator { $$ = exprNode_undefined; }
+ | designatorList designator { $$ = exprNode_undefined; }
+
+designator
+ : TLSQBR constantExpr TRSQBR { $$ = exprNode_undefined; }
+ | TDOT newId { $$ = exprNode_undefined; }
initList
: init
| QAUTO { $$ = qual_createAuto (); }
| QREGISTER { $$ = qual_createRegister (); }
-nullterminatedQualifier:
- QNULLTERMINATED IsType { $$ = qual_createNullTerminated (); }
-
stateClause
: stateClausePlain QENDMACRO { $$ = $1; }
: /* empty */ { $$ = qtype_unknown (); }
| completeTypeSpecifier { $$ = $1; }
+
+optStructInvariant
+: /* empty */ { $$ = constraintList_undefined; }
+/* don't want to have support for structure invariant until we're
+ sure it's stable
+ | QINVARIANT BufConstraintList QENDMACRO { $$ = $2 }
+*/
+
suSpc
: NotType CSTRUCT newId IsType TLBRACE { sRef_setGlobalScopeSafe (); }
CreateStructInnerScope
- structDeclList DeleteStructInnerScope { sRef_clearGlobalScopeSafe (); }
+ structDeclList DeleteStructInnerScope { sRef_clearGlobalScopeSafe (); }
TRBRACE
- { $$ = declareStruct ($3, $8); }
+ optStructInvariant { {ctype ct; ct = declareStruct ($3, $8); /* setGlobalStructInfo(ct, $12);*/ $$ = ct;} }
| NotType CUNION newId IsType TLBRACE { sRef_setGlobalScopeSafe (); }
CreateStructInnerScope
structDeclList DeleteStructInnerScope { sRef_clearGlobalScopeSafe (); }
| TLSQBR TRSQBR { $$ = ctype_makeArray (ctype_unknown); }
| TLSQBR constantExpr TRSQBR
{ $$ = ctype_makeFixedArray (ctype_unknown, exprNode_getLongValue ($2)); }
- | abstractDeclBase TLSQBR TRSQBR { $$ = ctype_makeArray ($1); }
+ | abstractDeclBase TLSQBR TRSQBR { $$ = ctype_makeInnerArray ($1); }
| abstractDeclBase TLSQBR constantExpr TRSQBR
- { $$ = ctype_makeFixedArray ($1, exprNode_getLongValue ($3)); }
+ { $$ = ctype_makeInnerFixedArray ($1, exprNode_getLongValue ($3)); }
| IsType TLPAREN TRPAREN
{ $$ = ctype_makeFunction (ctype_unknown, uentryList_makeMissingParams ()); }
| IsType TLPAREN paramTypeList TRPAREN
| iterationStmt
| iterStmt
| jumpStmt
-/* | lclintassertion {$$ = $1; printf ("Doing stmt lclintassertion\n"); }*/
-/*
-lclintassertion
- : QSETBUFFERSIZE id CCONSTANT QENDMACRO { printf(" QSETBUFFERSIZE id CCONSTANT HEllo World\n"); uentry_setBufferSize($2, $3); $$ = exprNode_createTok ($4);
- }
- | QSETSTRINGLENGTH id CCONSTANT QENDMACRO { printf(" QSETSTRINGLENGTH id CCONSTANT HEllo World\n"); uentry_setStringLength($2, $3); $$ = exprNode_createTok ($4);
- }
- | QTESTINRANGE id CCONSTANT QENDMACRO {printf(" QTESTINRANGE\n"); uentry_testInRange($2, $3); $$ = exprNode_createTok ($4);
- }
-
-/* | QSETBUFFERSIZE id id {$$ = $2; printf(" QSETBUFFERSIZE id id HEllo World\n");} */
iterBody
: iterDefStmtList { $$ = $1; }
| error { $$ = exprNode_makeError (); }
iterSelectionStmt
- : ifPred iterDefStmt
+ : ifPred { exprNode_checkIfPred ($1); } iterDefStmt
{ /* don't: context_exitTrueClause ($1, $2); */
- $$ = exprNode_if ($1, $2);
+ $$ = exprNode_if ($1, $3);
}
openScope
: newId TCOLON { $$ = exprNode_labelMarker ($1); }
| QNOTREACHED stmt { $$ = exprNode_notReached ($2); }
+/*
+** We allow more than one QFALLTHROUGH token to support mixed lint/splint markers.
+*/
+
+optExtraFallThroughs
+ : /* empty */ { ; }
+ | QFALLTHROUGH optExtraFallThroughs { ; }
+
/* Note that we can semantically check that the object to the case is
indeed constant. In this case, we may not want to go through this effort */
caseStmt
: CASE constantExpr { context_enterCaseClause ($2); }
TCOLON { $$ = exprNode_caseMarker ($2, FALSE); }
- | QFALLTHROUGH CASE constantExpr { context_enterCaseClause ($3); }
- TCOLON { $$ = exprNode_caseMarker ($3, TRUE); }
+ | QFALLTHROUGH optExtraFallThroughs CASE constantExpr { context_enterCaseClause ($4); }
+ TCOLON { $$ = exprNode_caseMarker ($4, TRUE); }
defaultStmt
: DEFAULT { context_enterCaseClause (exprNode_undefined); }
TCOLON { $$ = exprNode_defaultMarker ($1, FALSE); }
- | QFALLTHROUGH DEFAULT { context_enterCaseClause (exprNode_undefined); }
- TCOLON { $$ = exprNode_defaultMarker ($2, TRUE); }
+ | QFALLTHROUGH optExtraFallThroughs DEFAULT { context_enterCaseClause (exprNode_undefined); }
+ TCOLON { $$ = exprNode_defaultMarker ($3, TRUE); }
compoundStmt
: TLPAREN compoundStmt TRPAREN { $$ = $2; }
lltok_getLoc ($3)));
}
-
compoundStmtAux
: TLBRACE compoundStmtRest
{ $$ = exprNode_makeBlock ($2); }
: initializer { $$ = $1; }
| initializerList initializer { $$ = exprNode_concat ($1, $2); }
+typeInitializerList
+ : typeInitializer { $$ = $1; }
+ | typeInitializerList TCOMMA typeInitializer { $$ = exprNode_concat ($1, $3); }
+
+typeInitializer
+ : assignExpr { $$ = $1; }
+ | TLBRACE typeInitializerList optComma TRBRACE { $$ = $2; }
+
stmtList
: stmt { $$ = $1; }
| stmtList stmt { $$ = exprNode_concat ($1, $2); }
ifPred
: CIF TLPAREN expr TRPAREN
- { $$ = $3; exprNode_produceGuards ($3); context_enterTrueClause ($3); }
+ {
+ exprNode_produceGuards ($3); context_enterTrueClause ($3);
+ exprNode_checkIfPred ($3);
+ $$ = $3;
+ }
+
/*
** not ANSI: | CIF TLPAREN compoundStmt TRPAREN
** { $$ = $3; context_enterTrueClause (); }
context_exitTrueClause ($1, $2);
$$ = exprNode_if ($1, $2);
}
- | ifPred stmt CELSE { context_enterFalseClause ($1); } stmt
+ | ifPred stmt CELSE { context_enterFalseClause ($1); } stmt
{
context_exitClause ($1, $2, $5);
$$ = exprNode_ifelse ($1, $2, $5);
:
| TSEMI { ; }
+optComma
+ :
+ | TCOMMA { ; }
+
id
: IDENTIFIER
typeName
: TYPE_NAME
| TYPE_NAME_OR_ID { $$ = ctype_unknown; }
+ | CTYPEOF TLPAREN expr TRPAREN { $$ = exprNode_getType ($3); exprNode_free ($3); }
+ | CTYPEOF TLPAREN typeExpression TRPAREN { $$ = qtype_getType ($3); }
%%
llerror (FLG_SYNTAX, message ("Macro syntax not parseable: %s",
context_inFunctionName ()));
- if (context_inMacroUnknown ())
+ if (context_inUnknownMacro ())
{
if (!givehint)
{
andersk / splint.git / blobdiff