CODEWITHSUNDEEP
cc-preprocessor
Mawg
Mawg

Reputation: 40175

#ifdef #else - neither branch chosen

I have the following code

#if defined(TESTING)
#define TEST_FAILED_IN_VMC(...) TestFailed(__FILE__, __LINE__, __VA_ARGS__)
#define TEST_FAILED_IN_UNIT_TEST(...) TestFailedInUnitTest(__VA_ARGS__)
#else
#define TEST_FAILED_IN_VMC(...)
#define TEST_FAILED_IN_UNIT_TEST(...)
#endif

and make a call TEST_FAILED_IN_VMC(peripheral, testSuiteName, testName, "Internal coding error; bad state (%d)", state);

and the compiler complians that testSuiteName and testName are not defined - even though #TESTING is not defined.

[Update] The compiler also says "Error 3 implicit declaration of function 'TEST_FAILED_IN_VMC'

[Update] Please ignore veryting below this line. The problem is above. Thanks.

So, I tried this [Update] else should be #else, then I am told that TESTING is not defiend. SO, why is the code above not working?

#if defined(TESTING)
#error "Testing is defined <<<<<<<<<<<<<<<<<<<<<<<<"
wf
else
#error "Testing is NOT defined <<<<<<<<<<<<<<<<<<"
eyh6
#endif

#ifdef TESTING
#error "Testing is defined @@"
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else
#error "Testing is NOT defined @@"
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#endif

#error "Sample error ###"

and the only error the compiler gave was Error 3 #error "Sample error ###"

Any idea what is going wrong? (Atmel AVR Studio, which is based on Microsoft Visual studio`.

Many, many, many other #if defined are working just fine ...

Upvotes: 1

Views: 891

Answers (2)

shinkou
shinkou

Reputation: 5154

You're missing the # before the elses.

EDIT: For the real question you added, I've tried the following code which does compile and run without any problem in gcc 4.5.2.

#include <stdio.h>

#if defined(TESTING)
#define TEST_FAILED_IN_VMC(...) TestFailed(__FILE__, __LINE__, __VA_ARGS__)
#define TEST_FAILED_IN_UNIT_TEST(...) TestFailedInUnitTest(__VA_ARGS__)
#else
#define TEST_FAILED_IN_VMC(...)
#define TEST_FAILED_IN_UNIT_TEST(...)
#endif

int main()
{
        TEST_FAILED_IN_VMC
        (
                peripheral
                , testSuiteName
                , testName
                , "Internal coding error; bad state (%d)"
                , state
        );
        printf("Test successful\n");
        return 0;
}

So, what compiler (and what version) are you using?

Upvotes: 2

lnafziger
lnafziger

Reputation: 25740

Instead of else, use #else to use the correct preprocessor directive.

Upvotes: 3

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