compiler-warnings

This question already has answers here : Closed 7 years ago . Possible Duplicate: Pointer to local variable I've read a lot of other topics on this site about the same problem knowing it would be common. But I guess I'm dumb and can't figure out the proper way to do it. So, I apologize for yet another one of these questions and I'm hoping someone can give me a simple solution and/or explanation. Here's the entire code: Main.c #define WIN32_LEAN_AND_MEAN #include <Windows.h> #include <stdlib.h> #include <tchar.h> LPTSTR GetApplicationPath ( HINSTANCE Instance ); int APIENTRY _tWinMain (

Why does byte-compiling the the following produce a warning? (defmacro foomacro (shiftcode) `(defun foo (&optional arg) (interactive ,(concat shiftcode "p")) (message "arg is %i" arg)) `(defun bar (&optional arg) (interactive ,(concat shiftcode "Nenter a number: ")) (message "arg is %i" arg))) ;; provide backward compatibility for Emacs 22 (if (fboundp 'handle-shift-selection) (foomacro "^") (foomacro "")) This is the warning I get: $ emacs -Q --batch --eval '(byte-compile-file "foo.el")' In foomacro: foo.el:1:21:Warning: value returned from (concat shiftcode "p") is unused If I get rid of bar

I am executing a C program where I am getting warning: warning: assignment from incompatible pointer type I am copying related code herein: //Structure I am using: typedef struct graph_node { int id; int weight; struct node *next; }node, dummy; node *head[10]; // Function which is generating this warning: void print_list() { int i; for (i = 0;i< vertex; i++) { printf ("\n ==>>%d ", head[i]->id); while (head[i]->next != NULL) { head[i] = head[i]->next; printf ("\t ==>>%d ", head[i]->id); /******This line is generating warning ********/ } } } Above code compiles fine with throws the warning

I just can't find the option anywhere. Is there some way in eclipse to warn about stuff like this? if(a==b)continue; instead of if(a==b){continue;} Or can maybe the format function fix this? CheckStyle is a nice tool which can also be used as a plugin for eclipse. You can specify different kinds of coding styles you want to enforce on you / your team, by configuring rules in this tool. This could help you create your custom check. Window-->Preferences--> Java > Editor > Save Actions-->Additional actions-->Configure-->Code Style--> Use blocks in if/while... here you can configure the style you

I had a hard time to find a bug in my code caused by a loop like this: for (int i=i;i<5;i++){ // ... } I use g++ 4.7.2 with -O2 -Wall , but no warning/error is shown. Is there some compiler flag that also in combination with -O2 creates a warning for such a case? I found several related questions: here in the comments it is discussed, that g++ shows a warning with -Wall when there is no -O2 . However, that question is particular because the problematic loop is optimized away with -O2 which would explain that no warning is shown. In my case the loop is not optimized away, but still I get no