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Fixed #2161 (false positive: assigned a value that is never used)

This commit is contained in:
Daniel Marjamäki 2010-11-04 20:16:17 +01:00
parent 0984a0be47
commit d21974777c
3 changed files with 8 additions and 2 deletions
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5
lib/tokenize.cpp
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@ -4377,7 +4377,7 @@ void Tokenizer::simplifyCompoundAssignment()
// "a+=b" => "a = a + b" // "a+=b" => "a = a + b"
for (Token *tok = _tokens; tok; tok = tok->next()) for (Token *tok = _tokens; tok; tok = tok->next())
{ {
if (Token::Match(tok, "[;{}:] %var%")) if (Token::Match(tok, "[;{}:] *| %var%"))
{ {
if (tok->str() == ":") if (tok->str() == ":")
{ {
@ -4388,6 +4388,9 @@ void Tokenizer::simplifyCompoundAssignment()
// backup current token.. // backup current token..
const Token * const tok1 = tok; const Token * const tok1 = tok;
if (tok->strAt(1) == "*")
tok = tok->next();
// variable.. // variable..
tok = tok->tokAt(2); tok = tok->tokAt(2);
while (Token::Match(tok, ". %var%") || (tok && tok->str() == "[")) while (Token::Match(tok, ". %var%") || (tok && tok->str() == "["))

2
test/testtokenize.cpp
View File

@ -4640,6 +4640,8 @@ private:
ASSERT_EQUALS("{ x = x << y ; }", tokenizeAndStringify("{ x <<= y;}")); ASSERT_EQUALS("{ x = x << y ; }", tokenizeAndStringify("{ x <<= y;}"));
ASSERT_EQUALS("{ x = x >> y ; }", tokenizeAndStringify("{ x >>= y;}")); ASSERT_EQUALS("{ x = x >> y ; }", tokenizeAndStringify("{ x >>= y;}"));
ASSERT_EQUALS("; * p = * p + y ;", tokenizeAndStringify("; *p += y;"));
ASSERT_EQUALS("case 0 : x = x + y ; break ;", tokenizeAndStringify("case 0: x += y; break;")); ASSERT_EQUALS("case 0 : x = x + y ; break ;", tokenizeAndStringify("case 0: x += y; break;"));
ASSERT_EQUALS("; x . y = x . y + 1 ;", tokenizeAndStringify("; x.y += 1;")); ASSERT_EQUALS("; x . y = x . y + 1 ;", tokenizeAndStringify("; x.y += 1;"));

3
test/testuninitvar.cpp
View File

@ -376,7 +376,8 @@ private:
" char *s = malloc(100);\n" " char *s = malloc(100);\n"
" *s += 10;\n" " *s += 10;\n"
"}\n"); "}\n");
ASSERT_EQUALS("[test.cpp:4]: (error) Data is allocated but not initialized: s\n", errout.str()); TODO_ASSERT_EQUALS("[test.cpp:4]: (error) Data is allocated but not initialized: s\n", errout.str());
ASSERT_EQUALS("", errout.str());
checkUninitVar("void f()\n" checkUninitVar("void f()\n"
"{\n" "{\n"