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add a check for the mixing of vaarg and vanext with va_arg

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22260 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2005-06-19 03:53:56 +00:00
parent 825e6f4d9b
commit e78f50deea
1 changed files with 9 additions and 0 deletions
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9
lib/AsmParser/llvmAsmParser.y
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@ -48,6 +48,7 @@ static Module *ParserResult;
#define YYERROR_VERBOSE 1 #define YYERROR_VERBOSE 1
static bool ObsoleteVarArgs; static bool ObsoleteVarArgs;
static bool NewVarArgs;
static BasicBlock* CurBB; static BasicBlock* CurBB;
@ -728,6 +729,7 @@ static PATypeHolder HandleUpRefs(const Type *ty) {
llvmAsmlineno = 1; // Reset the current line number... llvmAsmlineno = 1; // Reset the current line number...
ObsoleteVarArgs = false; ObsoleteVarArgs = false;
NewVarArgs = false;
CurModule.CurrentModule = M; CurModule.CurrentModule = M;
yyparse(); // Parse the file, potentially throwing exception yyparse(); // Parse the file, potentially throwing exception
@ -735,6 +737,12 @@ static PATypeHolder HandleUpRefs(const Type *ty) {
Module *Result = ParserResult; Module *Result = ParserResult;
ParserResult = 0; ParserResult = 0;
if (ObsoleteVarArgs && NewVarArgs)
{
std::cerr << "This file is corrupt in that it uses both new and old style varargs\n";
abort();
}
if(ObsoleteVarArgs) { if(ObsoleteVarArgs) {
if(Function* F = Result->getNamedFunction("llvm.va_start")) { if(Function* F = Result->getNamedFunction("llvm.va_start")) {
assert(F->arg_size() == 0 && "Obsolete va_start takes 0 argument!"); assert(F->arg_size() == 0 && "Obsolete va_start takes 0 argument!");
@ -2041,6 +2049,7 @@ InstVal : ArithmeticOps Types ValueRef ',' ValueRef {
$$ = new SelectInst($2, $4, $6); $$ = new SelectInst($2, $4, $6);
} }
| VAARG ResolvedVal ',' Types { | VAARG ResolvedVal ',' Types {
NewVarArgs = true;
$$ = new VAArgInst($2, *$4); $$ = new VAArgInst($2, *$4);
delete $4; delete $4;
} }