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Fixed #5274 (TokenList: macro handling)

This commit is contained in:
Daniel Marjamäki 2014-01-03 18:53:37 +01:00
parent cbe3862599
commit 7125682d1a
4 changed files with 18 additions and 8 deletions
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2
lib/checknullpointer.cpp
View File

@ -761,7 +761,7 @@ void CheckNullPointer::nullPointerByDeRefAndChec()
// - logical operators
const Token* tok = i->classDef;
if ((i->type == Scope::eIf || i->type == Scope::eElseIf || i->type == Scope::eWhile) &&
tok && Token::Match(tok, "else| %var% ( !| %var% )|%oror%|&&") && !tok->next()->isExpandedMacro()) {
tok && Token::Match(tok, "else| %var% ( !| %var% )|%oror%|&&") && !tok->tokAt(tok->str()=="else"?1:0)->isExpandedMacro()) {
if (tok->str() == "else")
tok = tok->next();

14
lib/tokenlist.cpp
View File

@ -199,10 +199,13 @@ bool TokenList::createTokens(std::istream &code, const std::string& file0)
if (ch == Preprocessor::macroChar) {
while (code.peek() == Preprocessor::macroChar)
code.get();
ch = ' ';
if (!CurrentToken.empty()) {
addtoken(CurrentToken.c_str(), lineno, FileIndex, true);
_back->isExpandedMacro(expandedMacro);
}
CurrentToken.clear();
expandedMacro = true;
} else if (ch == '\n') {
expandedMacro = false;
continue;
}
// char/string..
@ -317,8 +320,10 @@ bool TokenList::createTokens(std::istream &code, const std::string& file0)
}
addtoken(CurrentToken.c_str(), lineno, FileIndex, true);
if (!CurrentToken.empty())
if (!CurrentToken.empty()) {
_back->isExpandedMacro(expandedMacro);
expandedMacro = false;
}
CurrentToken.clear();
@ -339,6 +344,7 @@ bool TokenList::createTokens(std::istream &code, const std::string& file0)
addtoken(CurrentToken.c_str(), lineno, FileIndex);
_back->isExpandedMacro(expandedMacro);
CurrentToken.clear();
expandedMacro = false;
continue;
}

4
test/testnullpointer.cpp
View File

@ -498,7 +498,7 @@ private:
ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:3]: (warning, inconclusive) Possible null pointer dereference: fred - otherwise it is redundant to check it against null.\n", errout.str());
}
// false positives when there are macros
// #3425 - false positives when there are macros
check("void f(struct FRED *fred) {\n"
" fred->x = 0;\n"
" $if(!fred){}\n"
@ -822,7 +822,7 @@ private:
"}");
ASSERT_EQUALS("", errout.str());
// false positives when there are macros
// #3425 - false positives when there are macros
check("void f(int *p) {\n"
" *p = 0;\n"
" $if(!p){}\n"

6
test/testtokenize.cpp
View File

@ -773,7 +773,11 @@ private:
}
void tokenize22() { // tokenize special marker $ from preprocessor
ASSERT_EQUALS("$a $b", tokenizeAndStringify("a$b"));
ASSERT_EQUALS("a $b", tokenizeAndStringify("a$b"));
ASSERT_EQUALS("a $b\nc", tokenizeAndStringify("a $b\nc"));
ASSERT_EQUALS("a = $0 ;", tokenizeAndStringify("a = $0;"));
ASSERT_EQUALS("a $++ ;", tokenizeAndStringify("a$++;"));
ASSERT_EQUALS("$if ( ! p )", tokenizeAndStringify("$if(!p)"));
}
// #4195 - segfault for "enum { int f ( ) { return = } r = f ( ) ; }"