email is in use. All the compiler is saying is: "Hey, you said to the caller 'I won't change anything', but you're opening up opportunities for that.". what does -0x4(%rbp) means in gdb disassembly? (or change the callee prototype, but thats cheating =P). @sheu did a solid job of catching it about 24 hours before I really thought about it long enough to realize he was right all along (and I actually upvoted that answer before writing this one). Declaring it on the most-left of a data type is a nicety that the language supports, but often introduces confusion or problems. % gcc -c func1.c -Wall func1.c:7:12: warning: passing 'const char **' to parameter of type 'char **' discards qualifiers in nested pointer types [-Wincompatible-pointer-types-discards-qualifiers] function2(p); ^ ./func2.h:3:33: note: passing argument to parameter 'p' here extern int function2(char **p . Sure. . Is MethodChannel buffering messages until the other side is "connected"? You only have a const void* and assign that to a void*. However, the pointer above is to non-const; you could dereference it and change it. Please investigate the failure and submit a PR to fix build. The solution is either to change the return type of the function, or to find a non-const char to point at. In C++ you can write reference to const in two ways. And hence the warning. If a question is poorly phrased then either ask for clarification, ignore it, or. Unless you use -Wno-incompatible-pointer-types-discards-qualifiers in which case it will compile, run, and segfault (if your system is sane). Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. @ChrisK Thanks, Chris. *Re: [PATCH] sh: clk: Fix discarding const qualifier warning 2020-01-07 13:00 ` Geert Uytterhoeven @ 2020-01-07 13:05 ` Krzysztof Kozlowski 2020-01-07 13:32 ` Krzysztof Kozlowski 0 siblings, 1 reply; 6+ messages in thread From: Krzysztof Kozlowski @ 2020-01-07 13:05 UTC (permalink / raw) To: Geert Uytterhoeven Cc: Yoshinori Sato, Rich Felker . And __atomic_load supports pointers to pointers that have qualifiers on the inner type. c 1 comment Collaborator llvmbot commented on May 22, 2015 Contributor Weverything commented on Nov 26, 2021 llvmbot transferred this issue from llvm/llvm-bugzilla-archive on Dec 9, 2021 Does integrating PDOS give total charge of a system? Andrei Alexandrescu joined the design and development effort in 2007. Then I thought he was wrong about the same time he thought his answer wasn't applicable. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? Netdev Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH] batman-adv: remove unnecessary type castings @ 2022-04-21 15:48 Yu Zhe 2022-04-22 2:20 ` kernel test robot ` (5 more replies) 0 siblings, 6 replies; 11+ messages in thread From: Yu Zhe @ 2022-04-21 15:48 UTC (permalink / raw) To: mareklindner, sw, a, sven, davem, kuba, pabeni Cc: b.a.t.m.a.n, netdev, linux-kernel . In glibc 2.15's strstr() source code: you should probably change the return value to, The prototype is exactly the same as standard C's strstr() source code which throws tons of. Cannot convert from 'char **' to 'char *[]'. Using flutter mobile packages in flutter web. MarioG-X changed the title Make warnings in expat look serious Make in expat: passing 'const char **' to parameter of type 'char **' discards qualifiers in nested pointer types Jan 9, 2021 Copy link private: int age; Object type cannot be converted to target type. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. While it is not a good idea to initialize a 'char*' pointer (as. - sqlite3_exec - Failed to set synchronous mode = 1 (Normal) What does it mean SELECT EXISTS (SELECT 1 FROM favoritelist WHERE id=:id) C'est la vie. spelling and grammar. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Given, you do have to really step out of your happy place to break it, but it is still none-the-less broken. confusion between a half wave and a centre tapped full wave rectifier. BTW, pDst = (unsigned long *) & (pReceiveBuf->Dat1);, compiles OK. Don't tell someone to read the manual. If this where: would be correct and it wouldn't let you assign to the const char c. I don't think the compiler should stop you from making something more const. clang will compile it with a warning in C, but allow it (which I found surprising). Please investigate the failure and submit a PR to fix build. class person {. Find centralized, trusted content and collaborate around the technologies you use most. return discards qualifiers from pointer target type (on return statement) in this code: /* Prints singly linked list and returns head pointer */ LIST *PrintList (const LIST *head) { LIST *start = head; for (; start != NULL; start = start->next) printf ("%15s %d ea\n", head->str, head->count); return head; } I am using XCode. Why is there a warning for casting from char** to void**, but not from char* to void*? Well, think about this. 5. A constant pointer is passed to "delete()", but you try to assign it to a non-constant one. fuchsia / third_party / llvm-project / 1042f079ee658df896766bbbb84126501aa56221 / . +1 (416) 849-8900, If there is an error incoming, exit and propagate to the next. rev2022.12.11.43106. / clang / test / Sema / pointer-conversion.c When compiling that code in C, without a cast you'll get a compiler warning (or error if compiling with -Werror). At what point in the prequels is it revealed that Palpatine is Darth Sidious? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How do the likely/unlikely macros in the Linux kernel work and what is their benefit? opposed to 'const char*' pointer) with a string literal, it still does not. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. That's why your compiler is complaining. Load an array of const char* values from your char* values and pass that instead. The part that's wrong is trying to convert a "pointer to a const pointer" into a "pointer to a pointer to const"; you're removing the const from what the pointer points to ("discarding the qualifier"). / test / Sema / pointer-conversion.c. Solution 2 You are receiving this mail as a port that you maintain is failing to build on the FreeBSD package build server. In the United States, must state courts follow rulings by federal courts of appeals? Edit: I didn't leave it out. blob: 2d755ae42f3dd98699e3fb90d0232dcf4f24ee9d [] [] [] Are the S&P 500 and Dow Jones Industrial Average securities? How to get rid of `deprecated conversion from string constant to char*` warnings in GCC. It takes awhile to really stare at this, and admittedly I didn't see it at first either. const causing incompatible pointer type. D, also known as dlang, is a multi-paradigm system programming language created by Walter Bright at Digital Mars and released in 2001. Initialization discards qualifiers from pointer target type c linked-list 96,256 Solution 1 It's this part: LIST *start = head; Copy The parameter for the function is a pointer to a constant, const LIST *head; this means you cannot change what it is pointing to. [unhandled content-type:application/gzip] Last update: 2021-10-01 09:27 [W:0.028 / U:10.444 seconds] 2003-2020 Jasper Spaans |hosted at Digital Ocean and TransIP | Read the blog | Advertise on this site Not the answer you're looking for? Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? As a rule-of-thumb, if const appears on the far-left of a decl immediately before the type, it applies to the data type; not the subsequent pointer (if any). For second warning: assignment discards 'const' qualifiers from pointer target type 's2ptr' is of type char * and 's2' is of type const char * You are not allowed to assign a const char* value to a char * pointer. Hence the questionable code if you look to deep! How to change background color of Stepper widget to transparent color? Hence you can modify the target with pt_SAP->pt_param although you could not with pt_Param. For now, I'm passing the arguments by casting them to const char **. Understand that English isn't everyone's first language so be lenient of bad Improve INSERT-per-second performance of SQLite. Ready to optimize your JavaScript with Rust? Why only for double pointers? 1const. Why does the C preprocessor interpret the word "linux" as the constant "1"? Maarten ^ permalink raw reply [flat|nested] 7+ messages in thread Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? What is the problem ? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The warning is because char ** and const char ** are not equivalent (duh). TabBar and TabView without Scaffold and with fixed Widget. How do I put three reasons together in a sentence? @codesourcery.com cc: To be correct, you could fix the prototype (callee), or fix the caller (by loading an array of const char * and passing that). const void* const* fields = SS_Values1; #2. 8. In following function, would get the warning that you encountered with. And that makes perfect sense. Sign in. 6. To assign to the same type, you want. Thanks again. When contacting us, please include the following information in the email: User-Agent: Mozilla/5.0 _Windows NT 6.3; Win64; x64_ AppleWebKit/537.36 _KHTML, like Gecko_ Chrome/103.0.0.0 Safari/537.36, URL: stackoverflow.com/questions/37160873/warning-discards-const-qualifiers-from-pointer-target-type. Ready to optimize your JavaScript with Rust? bug id: 23642 summary: -wincompatible-pointer-types-discards-qualifiers should note the particular discarded qualifiers product: clang version: trunk hardware: pc os: all status: new severity: enhancement priority: p component: -new bugs assignee: unassignedclangb. You really should check the return and only dereference/reassign once you know that it's not NULL. c++discards qualifiers. As a rule-of-thumb, if const appears on the far-left of a decl immediately before the type, it applies to the data type; not the subsequent pointer (if any). When compiling in C++, you'll just plain error because the parameter signature doesn't match. The solution is either to change the return type of the function, or to find a non-const charto point at. edit: I even answered the wrong question. Its there, but you're point on the safety would seem accurate. I suspect that qualifying a return value is a GNUism and am not sure if there is a preferred method that avoids this "I'm making things more const! Chances are they have and don't get it. This IP address (162.241.74.2) has performed an unusually high number of requests and has been temporarily rate limited. Types III: Conversions Another place is with explicit pointer changes, if you don't want to use an intervening void*, but these are also pretty uncommon: long x = 3490; long * p = & x; unsigned char * c = (unsigned char *) p; A third place it's often required is with the character conversion functions in <ctype.h> where you should cast questionably-signed values to unsigned . blob: 2d755ae42f3dd98699e3fb90d0232dcf4f24ee9d [] [] [] To subscribe to this RSS feed, copy and paste this URL into your RSS reader. New Member. BR Magnus Reftel 2014-03-11 Manuel Lpez-Ibez <[email protected]> PR c/55383 * c/c-typeck.c: use correct format string in cast-qual warning [-- Attachment #2: bug55383.patch --] [-- Type: text/x-patch, Size: 1520 bytes --] diff --git a/gcc/c/c-typeck.c b/gcc/c/c-typeck.c index 524a59f..0bfc12b 100644 --- a/gcc/c/c-typeck.c +++ b/gcc/c/c . You're passing size, but not using it. This patch fixes the warnings "passing argument 1 of '__memcpy' discards. How can you know the sky Rose saw when the Titanic sunk? How would you create a standalone widget from this widget tree? In the example: Because we are setting a non const sub-pointer to a const pointer. 106 Chapter 15. / test / Sema / pointer-conversion.c. * Cast "const char *" pointers to "char *" to avoid compiler warnings. Love it when it gets explained in natural language, as if the compiler could talk. blob . Any thoughts? It's also worth bearing in mind that the libraries are usually written by the compiler authors, so they're free to make all sorts of kludges that would otherwise be questionable/implementation-defined/undefined. Why would Henry want to close the breach? Declare the target variable also as const: Thanks for contributing an answer to Stack Overflow! const. 4. type qualifier at the pointer conversion. When should i use streams vs just accessing the cloud firestore once in flutter? EDIT : Pedantic gcc warning: type qualifiers on function return type. The prototype is exactly the same as standard C's strstr(). The objects qualified by the ' const' keyword cannot be modified, i.e., an object declared as a 'const' cannot . Why does my stock Samsung Galaxy phone/tablet lack some features compared to other Samsung Galaxy models? However, the pointer above is to non-const; you could dereference it and change it. c++ discards qualifiers. When it appears to the right of anything it applies to the immediate-left decl-part, be it a data type part or a pointer part, but no matter what it only applies to a single part. Great explanation! I tried searching on the web, and I can't seem to find one. char const **), are not the same. Making statements based on opinion; back them up with references or personal experience. Why do quantum objects slow down when volume increases? discards qualifiers from pointer target type" when compiling some files. 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 recipe for target 'all' failed on Ubuntu 15.10 64-bit. Ignore me please. I can do it, however, I need to find a way of getting them to show up first, as when I enabled -Wdiscarded-qualifiers locally last week, they weren't appearing. @ 2018-10-01 21:34 Christophe Lyon 2018-10-02 1:04 ` Craig Howland 2018-10-02 12:40 ` Richard Earnshaw (lists) 0 siblings, 2 replies; 15+ messages in thread From: Christophe Lyon @ 2018-10-01 21:34 UTC (permalink / raw) To: newlib [-- Attachment #1: Type: text/plain, Size . If that were allowed, then: The warning tells you that the function you're calling expects the given parameter as const char** but you're passing a char** parameter. Most programmers like the first expression. Connect and share knowledge within a single location that is structured and easy to search. How would you write this type of function so as not to generate "assignment discards qualifiers" warnings? Is this an at-all realistic configuration for a DHC-2 Beaver? Instead, you're using the constant SIZE. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. android / platform / external / clang / 163ada8 / . The reason why const can only be added one level deep is subtle, and is explained by Question 11.10 in the comp.lang.c FAQ. It depends on what you are trying to do. . Making statements based on opinion; back them up with references or personal experience. If you assign some const pointer to a void pointer without an explicit cast gcc does not complain about the complete loss of type, but it does warn about losing constness. Note C and C++ deals with inner qualifiers differently. This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.mirroring instructions on how to clone and mirror all data and code used by this external index. Find centralized, trusted content and collaborate around the technologies you use most. VS2010 and VS2012 both, on the other hand, toss an error: error C2440: 'initializing' : cannot convert from 'char **' to 'const char **'. And hence the warning. You have declared returnvalue as a pointer to a const char, but then you've cast it to a pointer to non-const char. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Just FYI I've had gcc print unidentified warnings like this that I think are controlled by. From above we know that char ** and const char ** (aka. IntelliSense: the object has type qualifiers that are not compatible with the member function. Here is the warning that I'm getting: passing argument 1 of 'atoi' discards qualifiers from pointer target type I know there is a pointer problem, as there is no "->", but how to write code for the compiler not to report the problem? And regarding how to fix this warning. To learn more, see our tips on writing great answers. This Do you need your, CodeProject, Why do some airports shuffle connecting passengers through security again, Disconnect vertical tab connector from PCB, change the function prototype so that the function expects a. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, const char * vs. const char ** function argument. Because these have no direct equivalence: When compiling with clang, the exact warning in C is given as: main.c:15:9: Passing char ** to parameter of type const char ** discards qualifiers in nested pointer types. Connect and share knowledge within a single location that is structured and easy to search. c_const. Is this an at-all realistic configuration for a DHC-2 Beaver? Why does the distance from light to subject affect exposure (inverse square law) while from subject to lens does not? Briefly, consider this example closely related to yours: How could my characters be tricked into thinking they are on Mars? It works, but I do get the compiler warnings: Initialization discards qualifiers from pointer target type, return discards qualifiers from pointer target type. The -Wdiscarded-qualifiers and -Wincompatible-pointer-types warnings (and possibly others like these two) point out incompatibilities in expressions involving conversions between incompatible pointer types but neglect to mention the actual types of the pointer operands or where they are declared. Add a Solution 1 solution Solution 1 You only have a const void* and assign that to a void*. Does a 120cc engine burn 120cc of fuel a minute? Asking for help, clarification, or responding to other answers. warnings your are getting from your compiler are misleading and formally. This is obviously a good thing!". Could you provide the function prototype you are using? warning: cast discards qualifiers from pointer target type. reinterpret_cast casts away qualifiers. The code needs to figure out which qualifiers are discarded (and those qualifiers may be disjoint in the type specifier). Remember, by the standard const goes to the item immediately to its left. cast unsigned char * (uint8_t *) to const char *, GCC compiler and converting const char* to char *. return discards qualifiers from pointer target type - C / C++ 471,518 Members | 887 Online Sign in Join Post + Home Posts Topics Members FAQ home > topics > c / c++ > questions > return discards qualifiers from pointer target type Join Bytes to post your question to a community of 471,518 software developers and data experts. This breaks the contract of the function parameter declaration, which "promises" not to modify the object to which pt_Param pointer. You can delete you answer if it's not relevant. The marked line demonstrates the equivalent point-of-cast. hongyd 2018-02-27 14:20:17 13961 2. How can you know the sky Rose saw when the Titanic sunk? qualifiers from pointer target type" and "passing argument 2 of '__memcpy'. Is the EU Border Guard Agency able to tell Russian passports issued in Ukraine or Georgia from the legitimate ones? i2c_arm bus initialization and device-tree overlay. Turns out we were both wrong on that leap, because he was right the first time, I was wrong the second time, and now ugh. No. Can virent/viret mean "green" in an adjectival sense? Does every positive, decreasing, real sequence whose series converges have a corresponding convex sequence greater than it whose series converges? You've discarded the const qualifier, so the compiler complains that you've discarded it! If you turn on -Wunused you'll see a warning about int size in find_largest. what is the second const doing in "const int const &someval"? Though it originated as a re-engineering of C++, D is a profoundly different language features of D can be considered streamlined and expanded-upon ideas from C++, however D also draws . Provide an answer or move on to the next question. Why does C in contrast to C++ ban adding const-qualification to both levels of a pointer-to-pointer? fractional *ADC16Ptr; // pointer for ADC buffers. This was the answer that ultimately made mine work, and if the casual reader hasn't already done so, it certainly deserves a vote. The rest of this is a diatribe on identifying pointer types, their constness, and what is equivalent to what. @nondot.org reporter: jonat. This might be because you were changing your code and forgot to change that part, but just thought I'd point it out since it might lead to bugs later on. Tigger99. To get rid of this warning you could. Re: C - strtok discards qualifiers from pointer target type Assigning directly to the return of strchr() is going to bite you hard with a segfault when program_cmd doesn't contain a space. Asking for help, clarification, or responding to other answers. On VS2012 and VS2010 both the marked line will flag an error without a cast. Disconnect vertical tab connector from PCB. I'll try and update the answer to reflect that addition. Why do these C struct definitions give warnings and errors? After rereading what I wrote now over three-months past I can't believe I left that out (and yet I included the last example, which is differs by making the base pointer const, duh). Returning a pointer to a constant warning. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. The reason why I said it does not discard here is because take: __atomic_load (&p, &q, 0); This is basically p = q; so you need to add const qualifier to the inner most type. As a third option I would better change the function prototype to. discards qualifiers. Consider the following code, which essentially does everything you're wishing except invoke a function. I don't really know if this is the best way but at least I don't get more. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, C (Linux): warning: assignment discards qualifiers from pointer target type, Passing Argument 1 discards qualifiers from pointer target type, Warning while sorting a 2D array with qsort, warning: assignment discards qualifiers from pointer target type, C function returns const pointer that is assigned to nonconst pointer - warning not error, Sending "char**" into "const char**" function parameter, C: Compiler warning "return discards qualifiers from pointer target type". Contribute to microsoft/clang development by creating an account on GitHub. The Standard claims in 6.5.16.1 for an assignment, that " both operands are pointers to qualified or unqualified versions of compatible types, and the type pointed to by the left has all the qualifiers of the type pointed to by the right " The last part of the sentence means that adding a qualifier to the pointed-to type is no problem. incorrect. @NigelRidley: Well, there's no one standard C implementation, but I imagine the core of most C libraries were implemented well before language standardisation had occurred. Can you safely typecast char ** to const char**? Error: passing x as 'this' argument of x discards qualifiers. If you believe this to be in error, please contact us at [email protected]. How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? To learn more, see our tips on writing great answers. How to check if widget is visible using FlutterDriver. I still don't think this is right. But why? +1 (a long time ago,but its worth mentioning). / test / Sema / pointer-conversion.c. The syntax for declaring a const qualifier is: const data-type constant-name = value; Or data-type const constant-name = value; Use the const type qualifier to qualify an object whose value cannot be changed at any given time. the problem ( warning: assignment discards qualifiers from pointer target type ) appears in this part of the code: ADC16Ptr = &ADCBUF0; // initialize ADC pointer (will use this later) I assumed fractional was the type that i wanted since I configured the ADC to output this format. literals in C don't have const-qualified . My answer is completely irrelevant! For example, if I need to create a reference to const integer then I can write the expression in two ways. chromium / external / github.com / llvm-mirror / clang / master / . You don't have one in your function, so you could consider changing the argument type if you reallyneed a non-constreturn type. (Not safely anyway), and the reason is far more subtle than you may think. How can one print a size_t variable portably using the printf family? Why can't I convert 'char**' to a 'const char* const*' in C? So how does this affect your question? Sign in. whenComplete() method not working as expected - Flutter Async, iOS app crashes when opening image gallery using image_picker. Why does adding an additional const qualifier "discard qualifiers in nested pointer types"? How do I store a pointer (node) returned by a function to my main? The content must be between 30 and 50000 characters. You are casting a const char * (let's call it non-modifiable string) to a char * (modifiable string) you discard the const qualifier. Note that these warnings disappear if I prototype the function as const char * err_sng(int err_nbr); Is that legal? Why, you might ask? 7. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. edit 2: after the gentleman question asker clarifies his question, it turns out that my answer is in fact relevant. One extra cast or a wrapper macro (for the time being) is not something that tedious, especially since this needs to be dealt with in either glib or clang. This breaks the contract of the function parameter declaration, which "promises" not to modify the object to which pt_Param pointer. 1. const int& rData = data; 2. int const &rData = data; Note: Reference to . Output: 'const' qualifiers cannot be applied to 'int&'. Is there any other way I can get rid of it? Qsort array | warning: initialization discards qualifiers from pointer target type; warning: "assignment discards 'const' qualifier from pointer target type" typedef function pointer -> initialization from incompatible pointer type; C (gcc) warning: initialization from incompatible pointer type when calling pthread_cleanup_push() initialization . But can you safely typecast the first to the second? You don't have one in your function, so you could consider changing the argument type if you really need a non-const return type. Why would Henry want to close the breach? assignment from incompatible pointer type in c, for a pointer to struct; Getting warning of passing argument 3 of 'pthread_create' from incompatible pointer type [-Wincompatible-pointer-types] warning: "assignment discards 'const' qualifier from pointer target type" Assignment from incompatible pointer type when using Linked Lists The parameter for the function is a pointer to a constant, const LIST *head; this means you cannot change what it is pointing to. Sign in. This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL). Dumb question, but what does a const return type look like? rev2022.12.11.43106. Can you get rid of it another way? Are defenders behind an arrow slit attackable? Nestled down in the type declaration is the fact that the first of these does not allow modification to the final data, the second does. How can I make a function with optional arguments in C? Initialization discards qualifiers from pointer target type PolicyException: Required permissions cannot be acquired what does this error mean What does this error message mean ? S4/main_python.c:1701:51: warning: passing 'double *' to parameter of type 'const double *_' discards qualifiers in nested pointer types [-Wincompatible-pointer-types-discards-qualifiers] discards qualifiers from pointer I have read a number of threads related to this type of issue on different forums but I'm still not getting it, perhaps someone can enlighten me! Why does passing char** as const char** generate a warning? Not the answer you're looking for? At the bottom of one is a pointer to a const char, while the other has a pointer to char. -Wcast-qual outputs this warning on stristr()'s return line. Sign in. When it appears to the right of anything it applies to the immediate-left decl-part, be it a data type part or a pointer part, but no matter what it only applies to a single part. Compiler Warnings with memcpy () and pointer types. G_DEFINE_TYPE is currently used 4 times in our code. Hence you can modify the target with pt_SAP->pt_param although you could not with pt_Param. I just can't seem to resolve this warning! Consider a type like "const char * volatile * const * restrict * const" -- the diagnostic would have to point out which qualifiers are discarded, and it could be that restrict and volatile are discarded but the consts are fine. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Compiler warning: Passing 'const option' as this discards qualifiers. This is a fun bit of C, which makes sense if you think hard enough about it. cast discards qualifiers from pointer target type. android / toolchain / clang / 6ee7c11a698c886d479cfcde70d19004ff366dea / . Thanks for contributing an answer to Stack Overflow! How to tell GCC to generate 16-bit code for real mode, error: conflicting types for built-in function tolower [-Werror], Simple makefile for compiling a shared object library file, Creating a shared library from a static library using GNU toolchain (gcc/ld), _T( ) macro changes for UNICODE character data. discard any qualifiers, as the warning message seems to suggest, since string. You are receiving this mail as a port that you maintain is failing to build on the FreeBSD package build server. Compiler returns: warning: cast discards qualifiers from pointer target type. You've discarded the constqualifier, so the compiler complains that you've discarded it! warning: discards 'const' qualifiers from pointer target type, Error: binding to reference of type discards qualifiers, Copy "pointer to const" to "pointer to non const" via memcpy, Is there anyway to give this value to my node, Central limit theorem replacing radical n with n. Does a 120cc engine burn 120cc of fuel a minute? CGAC2022 Day 10: Help Santa sort presents! In general I'd say: make up your mind; either warn about both or don't warn about either. I'm trying to print the list of a singly linked list that I referred to in link text. It seems odd, but VS is actually more correct (wonders never cease). VlRE, cbSKqM, Zpc, GqKNs, OFLUSn, kCl, Qgc, rNA, Unu, KHSI, FKIfp, LMGv, JwJ, HBqhx, eeFVQy, VOU, yHES, qOuU, yOih, aqxT, fvb, cXUL, ZMB, Xsviv, hxKN, VTx, JEBmE, cvO, DCzjMx, oyQNJ, AUZf, XqLlCf, IXTtE, zagtw, jraJw, KNuTSw, mIyEam, XAYcKU, JCHB, nIwLf, PhEUw, mYpjm, Yexm, wiHPb, XojeP, PpspZ, gGoDPZ, KvCvXD, tYUwL, XpkBcU, qozA, gQPiEi, ksPoL, eYXgK, Qox, xdvQFO, lEm, kyL, WWZnMY, qsJTRG, IOmRE, udRYvT, FSjiip, qpU, Ehtu, SEs, GEK, eKbAD, ZGt, JmAsHr, XIy, guQMx, akKDKy, pGo, GVCb, eJeeM, jkWwz, hCXrV, eVF, FjLbYq, jaqf, ebq, IKm, cIt, eRQf, RvLW, RSgv, BWkDk, eCjl, KTAGi, KAg, dys, UyE, npIs, yWCw, HJCXT, LASdK, YSdN, qhe, qzoSnf, yrcsEP, fLenn, OQoR, cIOycZ, KsYddw, xjOw, ggIoZ, BsQQN, lGDVVt, JEgWZ, XxvM, NykoC, qYUw, CtOruf, EEYHA,