I get this warning from GCC: warning: cannot pass objects of non-POD type 'class Something' through '...'; call will abort at runtime It's pretty deadly, especially since it calls an abort. Why isn't this an error? I would like to make it an error, but: How do I make a specific warning an error? Which warning is it? According to ...
For some long errors, the gcc output is dense and has lots of line-wrapping etc. Especially when errors are subtle, it can take me 10-30 seconds of squinting to parse it with my eyes. I've taken to pasting this in an open code-editor window to get some basic syntax highlighting and enable reformatting with regex's. Has anyone invented...
Hello! How can I suppress following warning from gcc linker: warning: the use of mktemp' is dangerous, better use mkstemp' I do know that it's better to use mkstemp() but for some reason I have to use mktemp() function. ...
I recently was making a change to to our codebase from float to long for some variables, and discovered that there were no error messages generated by the compiler in areas I knew were still wrong. This led me to add -Wconversion to the compiler flags. But, oops, this leads to some spurious error messages. In the snippet below, I get er...
Hi, I need a set of wrappers around the standard system calls-open,listen,etc. For these i have a few "#define" as in: #define open(a,b,c) JCL_Open(a,b,c) But when i compile the header and associated .c files, i am getting the following warning: /jcl_wrappers.h:114:1: warning: "open" redefined /jcl_wrappers.h:113:1: warning: this is ...
I'm writing a simple function in C whose purpose is to take a 6 bit number, work out the first 3 bits, and based on that, return a "r", "w" or "o". However, when I compile I get this warning: 'return makes integer from pointer without a cast'. Then, when I run the program, I find that the function is returning a weird character that def...
I'm removing all warnings from our compile, and came across the following: warning: the address of ` char* index(const char*, int)', will always be 'true' for the following line of code: DEBUG_MSG("Data received from Device "<<(int)_nodeId << "for" << index <<(int)msgIn.index<<"."); DEBUG_MSG is one of our logging macros that th...
I'm curious if there is an option to disable gcc warnings about a parameter not being valid for the language being compiled. Ex: cc1: warning: command line option "-Wno-deprecated" is valid for C++/Java/ObjC++ but not for C Our build system passes the warnings we have decided on globally across a build. We have both C/C++ code and t...
I'm getting a number of these warnings when compiling a few binaries: warning: incompatible implicit declaration of built-in function ‘strcpy’ warning: incompatible implicit declaration of built-in function ‘strlen’ warning: incompatible implicit declaration of built-in function ‘exit’ To try to resolve this, I have added #include <...
I keep getting this warning from a third-party library (which I don't want to debug), so I'd really appreciate a way to suppress this specific warning. Google failed me, so here I am. ...
Is there a way to enable a hilighting scheme for gcc/g++ warning output? I'd like a simple way to spot (bright red?) warnings from my compiler as the messages are streaming by. ...
When I compiled my C++ code with GCC 4.3 for the first time, (after having compiled it successfully with no warnings on 4.1, 4.0, 3.4 with the -Wall -Wextra options) I suddenly got a bunch of errors of the form warning: type qualifiers ignored on function return type. Consider temp.cpp: class Something { public: const int getConstT...
Hi, I have a small sample function: #define VALUE 0 int test(unsigned char x) { if (x>=VALUE) return 0; else return 1; } My compiler warns me that the comparison (x>=VALUE) is true in all cases, which is right, because x is an unsigned character and VALUE is defined with the value 0. So I changed my code to: if ( ((sign...
Is there a #pragma to have gcc/Xcode suppress specific warnings, similar to Java's @SuppressWarning annotation? I compile with -Wall as a rule, but there are some situations where I'd like to just ignore a specific warning (e.g. while writing some quick/dirty code just to help debug something). I'm not looking for "fix the code" answer...
Hi, I was wondering whether there is a way to tell the compiler (I'm on gcc version 4.1.2 20080704 (Red Hat 4.1.2-46) or icc 11.1) to throw a warning whenever a long-to-int implicit conversion takes place. For example, compiling the file test.c which contains the code: #include <stdio.h> #include <stdlib.h> int main(int argc, char** a...
I have a project that uses log4cxx, boost, etc. libraries whose headers generate lots of (repetitive) warnings. Is there a way to suppress warnings from library includes (i.e. #include <some-header.h>) or includes from certain paths? I'd like to use -Wall and/or -Wextra as usual on project code without relevant info being obscured. I cur...
int i = 3.1 / 2 does not cause any warnings,even with -Wall option.Sometimes,I would like to know where precision lose.Why gcc does not support this warning,while msvc support this one? thanks. EDIT: my gcc -v shows Configured with: ../../gcc-4.4.1/configure --prefix=/mingw --build=mingw32 --enable-languages=c,ada,c++,fortran,objc,o...
I'm writing a command line program in ANSI C to parse a Quake 2 map file to report how many entities and textures are being used. My development machine is MacBook. I'm testing on OS X Snow Leopard (32-bit), Windows XP (32-bit) and Vista (64-bit), and Ubuntu 9.10 (32-bit). The code is flawless on the OS X and GCC 4.2. The other pla...
The C source codes that I am trying to port into 64 bit runs without any warning in the 32 bit environment. When I compile in 64 bit linux environment with the compile gcc (Ubuntu 4.4.1-4ubuntu9) 4.4.1, it shows the following warning mostly: warning: cast to pointer from integer of different size The above warning were the most. I us...
This is my warning. implicit declaration of function 'exit' How i can remove it. i am using linux & gcc compiler. ...