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Move sqrt{,f,l} argument checks to cfg file (#1313)

This commit is contained in:
rikardfalkeborn 2018-07-20 20:56:39 +02:00 committed by Daniel Marjamäki
parent 788ad0fc1f
commit 30a8d953e3
3 changed files with 6 additions and 9 deletions
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3
cfg/std.cfg
View File

@ -217,6 +217,7 @@
<leak-ignore/>
<arg nr="1">
<not-uninit/>
<valid>0.0:</valid>
</arg>
</function>
<!-- float sqrtf(float x); -->
@ -228,6 +229,7 @@
<leak-ignore/>
<arg nr="1">
<not-uninit/>
<valid>0.0:</valid>
</arg>
</function>
<!-- long double sqrtl(long double x); -->
@ -239,6 +241,7 @@
<leak-ignore/>
<arg nr="1">
<not-uninit/>
<valid>0.0:</valid>
</arg>
</function>
<!-- double complex csqrt(double complex x); -->

6
lib/checkfunctions.cpp
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@ -241,12 +241,6 @@ void CheckFunctions::checkMathFunctions()
mathfunctionCallWarning(tok); // case log(0)
}
}
// sqrt( x ): if x is negative the result is undefined
else if (Token::Match(tok, "sqrt|sqrtf|sqrtl ( %num% )")) {
if (MathLib::isNegative(tok->strAt(2)))
mathfunctionCallWarning(tok);
}
// atan2 ( x , y): x and y can not be zero, because this is mathematically not defined
else if (Token::Match(tok, "atan2|atan2f|atan2l ( %num% , %num% )")) {
if (MathLib::isNullValue(tok->strAt(2)) && MathLib::isNullValue(tok->strAt(4)))

6
test/testfunctions.cpp
View File

@ -455,9 +455,9 @@ private:
" std::cout << sqrtf(-1) << std::endl;\n"
" std::cout << sqrtl(-1) << std::endl;\n"
"}");
ASSERT_EQUALS("[test.cpp:3]: (warning) Passing value -1 to sqrt() leads to implementation-defined result.\n"
"[test.cpp:4]: (warning) Passing value -1 to sqrtf() leads to implementation-defined result.\n"
"[test.cpp:5]: (warning) Passing value -1 to sqrtl() leads to implementation-defined result.\n", errout.str());
ASSERT_EQUALS("[test.cpp:3]: (error) Invalid sqrt() argument nr 1. The value is -1 but the valid values are '0.0:'.\n"
"[test.cpp:4]: (error) Invalid sqrtf() argument nr 1. The value is -1 but the valid values are '0.0:'.\n"
"[test.cpp:5]: (error) Invalid sqrtl() argument nr 1. The value is -1 but the valid values are '0.0:'.\n", errout.str());
// implementation-defined behaviour for "finite values of x<0" only:
check("void foo()\n"