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gcc error defined but not used Verplanck, New York

Normally this only warns about global allocation functions, but -Waligned-new=all also warns about class member allocation functions. -Wplacement-new-Wplacement-new=nWarn about placement new expressions with undefined behavior, such as constructing an object in Darn! request for implicit conversion from void * to a pointer to non-void type. -Wc++11-compat (C++ and Objective-C++ only)Warn about C++ constructs whose meaning differs between ISO C++ 1998 and ISO C++ The compiler will not issue any warnings in this case, even if the function is declared but not used in some translation unit.

Often programmers expect it to be a value computed inside the conditional expression instead. any other workarounds? –ameen Jan 30 '15 at 8:47 add a comment| up vote 10 down vote I'm fairly sure the relevant warning option is this one: -Wunused-functionWarn whenever a static Tried methods: =========== I tried by removing the static key-word for all the functions (for which the compiler issues warning). I suspect most implementations will either fully inline, or don't inline at all, but it is possible to partly inline a function, in which case only the places that don't inline

Browse other questions tagged gcc warnings compiler-warnings or ask your own question. Traditional C lacks a separate namespace for labels. But this warning will still warn about them, to help people avoid writing code that is undefined in C and earlier revisions of C++. It warns only about unused static const variables defined in the main compilation unit, but not about static const variables declared in any header included. -Wunused-const-variable=2This warning level also warns for

I haven't looked at the asm output to investigate when the nearly-unused functions are stripped. Animal Shelter in Java What do I do when two squares are equally valid? However, it has many false positives. How can I make LaTeX break the word at the end of line more beautiful?

Valid ISO C and ISO C++ programs should compile properly with or without this option (though a rare few require -ansi or a -std option specifying the required version of ISO You are saying that these functions "are not used in a.c, but used in b.c". I was hoping that someone would tell you that writing macros is considered poor programming, especially in the case you are implementing. If I made a standalone function which does so, it would cause non-required call of function in a place where it is not really required; so, from time to time I'm

Out of those functions, only partially are used in a source .C file.Suppose a.h,b.h are header files and a.c and b.c are .c files. All these rules describe only a partial order rather than a total order, since, for example, if two functions are called within one expression with no sequence point between them, the See Function Attributes. I had no luck searching the GCC documentation.

This warning is enabled by -Wall. -Wsequence-pointWarn about code that may have undefined semantics because of violations of sequence point rules in the C and C++ standards. What sense of "hack" is involved in "five hacks for using coffee filters"? This manual lists only one of the two forms, whichever is not the default. However, without this option, certain GNU extensions and traditional C and C++ features are supported as well.

What kind of distribution is this? Options enabled or disabled via pragmas (see Diagnostic Pragmas) take effect as if they appeared at the end of the command-line. The actual requirements may be somewhat greater than len even if you do not get a warning. How does NumPy solve least squares for underdetermined systems?

De kio “saluton” estas la rekta objekto? This warning is for cases not covered by -Wno-pointer-sign, which warns for pointer argument passing or assignment with different signedness. -Wno-int-conversion (C and Objective-C only)Do not warn about incompatible integer to https://stackoverflow.com/questions/10876930/should-one-never-use-static-inline-function https://stackoverflow.com/questions/7762731/whats-the-difference-between-static-and-static-inline-function Also, this function is not a class function as far as I know. — Reply to this email directly or view it on GitHub. Warns for all pointer conversions between possibly incompatible types, even if never dereferenced.

It is recommended to first consider suggestions of -Wsuggest-final-types and then rebuild with new annotations. -Wsuggest-overrideWarn about overriding virtual functions that are not marked with the override keyword. -Warray-bounds-Warray-bounds=nThis option is This warning intentionally is not issued for prototype declarations or variadic functions because these ISO C features appear in your code when using libiberty's traditional C compatibility macros, PARAMS and VPARAMS. Even though these functions look absolutely the same, they are still separate, completely independent functions. For example, casting char ** to const char ** is unsafe, as in this example: /* p is char ** value. */ const char **q = (const char **) p; /*

Hot Network Questions how can you tell if the engine is not brand new? For example, in: float area(float radius) { return 3.14159 * radius * radius; } the compiler performs the entire computation with double because the floating-point literal is a double. -Wduplicate-decl-specifier (C In C this declares variable storage, but in C++ this is not an error since const variables take the place of #defines. Non-static class functions (i.e., member functions) are implicitly declared inline.

While the previous example would be diagnosed, the following construct makes use of the flexible member array extension to avoid the warning at level 2. Word with the largest number of different phonetic vowel sounds Are the words "expression" and "term" interchangeable in programming language theory? Warnings are disabled in the expression that follows __extension__. -Wc99-c11-compat (C and Objective-C only)Warn about features not present in ISO C99, but present in ISO C11. This warning detects various mistakes such as: int i = 1; ...

The C standard specifies that such arguments are ignored. Powered by vBulletin Version 4.2.3 Copyright © 2016 vBulletin Solutions, Inc. To fix, use the appropriate casts when converting between signed and unsigned types to avoid overflows. ansiSeptember 8th, 2007, 08:50 PMI think you should give us a snip of your warning so we can help you...

To suppress this warning cast the unused expression to void. functions that are declared as static. General issues New warnings Improvements to the GCC infrastructure allow improvements in the ability of several existing warnings to spot problematic code. Initialization of unions.