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Fixed #1776 (False Negative: Unitialized array)

This commit is contained in:
Daniel Marjamäki 2010-06-14 08:36:34 +02:00
parent b5d0955d11
commit cb7e9fbec1
4 changed files with 21 additions and 3 deletions
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4
lib/checkother.cpp
View File

@ -2936,7 +2936,7 @@ private:
!Token::simpleMatch(tok2->next(), "="))
{
bool foundError;
if (tok2->next()->str() == "[")
if (tok2->previous()->str() == "*" || tok2->next()->str() == "[")
foundError = use_array_or_pointer_data(checks, tok2);
else
foundError = use(checks, tok2);
@ -3058,7 +3058,7 @@ private:
return tok.next()->link();
}
if (Token::Match(&tok, "asm ( )"))
if (Token::simpleMatch(&tok, "asm ( )"))
{
ExecutionPath::bailOut(checks);
return &tok;

3
lib/tokenize.cpp
View File

@ -3577,7 +3577,8 @@ bool Tokenizer::simplifyTokenList()
if (! next)
break;
if (Token::Match(next, "* ( %var% + %num% )"))
if (Token::Match(next, "* ( %var% + %num% )") ||
Token::Match(next, "* ( %var% + %var% )"))
{
// var
tok = tok->next();

7
test/testother.cpp
View File

@ -1799,6 +1799,13 @@ private:
"}\n");
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
checkUninitVar("int f()\n"
"{\n"
" char a[10];\n"
" char c = *a;\n"
"}\n");
ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: a\n", errout.str());
checkUninitVar("int f()\n"
"{\n"
" char a[10];\n"

10
test/testtokenize.cpp
View File

@ -43,6 +43,9 @@ private:
TEST_CASE(tokenize4);
TEST_CASE(tokenize5);
// array access. replace "*(p+1)" => "p[1]"
TEST_CASE(tokenize6);
// don't freak out when the syntax is wrong
TEST_CASE(wrong_syntax);
@ -327,6 +330,13 @@ private:
ASSERT_EQUALS("; 1E-2 ;", tokenizeAndStringify("; 1E-2 ;"));
}
void tokenize6()
{
// "*(p+1)" => "p[1]"
ASSERT_EQUALS("; x = p [ 1 ] ;", tokenizeAndStringify("; x = * ( p + 1 ) ;", true));
ASSERT_EQUALS("; x = p [ n ] ;", tokenizeAndStringify("; x = * ( p + n ) ;", true));
}
void wrong_syntax()
{
errout.str("");