cast from pointer to integer of different size

32-character character-like hexadecimal representation. func is returning an integer that is being stored in a pointer; ptr is later cast to an integer and used as an integer. And about the warning "cast to pointer from integer of different size" you can leave this warning because a pointer can hold the value of any variable because pointer in 64x is of 64 bit and in 32x is of 32 bit. This can be silenced by additionally casting func () to a suitable integer type, e.g. The [-Wpointer-to-int-cast] warning is enabled by specifying the -Wall compiler option. pseudoPins.c: In function myAnalogRead: pseudoPins.c:50:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] by viruss33 Mon Jun 27, cast to pointer from integer of different size. This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s). The [-Wpointer-to-int-cast] warning is enabled by specifying the -Wall compiler option. c. gcc -pthread -g firstTread4.c firstTread4.c: In function threadFunc: firstTread4.c:13:14: warning: A double cast would solve this (int) (uintptr_t)t->key. It is defined as follows : Integer type capable of holding a value converted from a void pointer and then be converted back to that type with a The text was updated successfully, but these errors were encountered: tpaviot mentioned this issue on Jun 11, 2012. cppcheck 1.54 report #286. The compiler issues the cast from integer to pointer of different size warning whenever the value of an integer is converted to a pointer, especially when the memory allocated to a pointer is smaller than the memory allocated to an integer data type. If the result cannot be represented in the integer type, the behavior is undefined. [PATCH 3/8] exynos_fimg2d: fix cast from pointer to integer of different size. That is why intptr_t and uintptr_t are there. reinterpret_cast fixes that. Problem: I received the following warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] Solution: The GNU Compiler Collection (GCC) 4.6.3 issues a warning when you cast a pointer to an integer that is a different size. Then, you will get your warning ("cast to pointer from integer of different size") iff the return type of func does not fit for addresses. On 08/19/10 01:40, Dag-Erling Smrgrav wrote: > FreeBSD Tinderbox writes: > >>>>> Kernel build for LINT started on Thu Aug 19 02:51:08 UTC 2010 with a cast to (StackFrame*) but never generates the warning. After Creating a UUID, we can get different different values depending on the format. In the older compilers just doing the char *ptr = (char *)23 was good enough but the new compilers know a int (23 would be stored in a int) is not the size of a pointer (normally 64 bits) and it generates the warning message. You are wrongly using an hack to pass an integer to a thread. unsigned int offset = (uintptr_t) dst % blkLen; Youll need to include stdint.h or inttypes.h to have uintptr_t available. Problem: I received the following warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] Solution: The GNU Compiler Collection (GCC) 4.6.3 issues a warning when you cast a pointer to an integer that is a different size. Problem: I received the following warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] Solution: The GNU compiler collection (GCC) 4.6.3 issues a warning when you cast a pointer to an integer that is a different size. These warnings have to be fixed. This type has the same size of a pointer (not int) in every architecture. It is defined as follows : Integer type capable of holding a value converted from a void pointer and then be converted back to that type with a value that compares equal to the original pointer. *a is the syntax. Code: The problem is that converting a void* pointer to unsigned int is inherently non-portable. Quoting C11, 6.3.2.3. intptr_t: some_struct *ptr = (void*) (intptr_t)func (); . frame = (StackFrame *)stack_start; The line a little further in the code assigns to frame as well. The errors forbid the code from executing, whereas warnings allow the execution of the code, but sometimes this execution can cause some memory handling issues. Size value is 0, type is *int, address is 0x414020 New size value is 85 Dereferencing a pointer. The warning means exactly what it says. frame = (StackFrame*)frame->savedSP; That way we cast integers to the right size first before turning them into pointers, and pointers are first covnerted to integers of the right size before converting them into integers. / cast to pointer from integer of different size, pthread code. error: cast from pointer to integer of different size; Getting started with C or C++ | C Tutorial | C++ Tutorial | C and C++ FAQ error: cast from pointer to integer of different size Hi, non-C-programmer here, sorry. I'm on Windows7-64, MinGW, and GCC 5.2. This type has the same size of a pointer (not int) in every architecture. #!/usr/bin/env perl # SPDX-License-Identifier: GPL-2.0 # # (c) 2001, Dave Jones. makrai commented on Jul 22, 2015. Let's fix the casting warnings described in systemd#7788 by casting the the pointers and values to this type first. m pointers UINTN is the integer type equalling the native ptr size. Re: [PATCH 1/2] efi: Fix cast to pointer from integer of different size in TPM log code. I'm having a problem assigning the value of a 2 d array into an int, it gives me the warning "cast from pointer to integer of different size c". The reinterpret_cast take the value and casts it to the type and size of pointer given. The possible difference in size is only part of the problem. ghost referenced this issue on May 6, 2014. regex.c:4415: warning: cast to pointer from integer of different size regex.c:4588: warning: cast from pointer to integer of different size gcc -c -DHAVE_CONFIG_H when compiled at -m64 on Darwin PPC but not -m32. Problem: I received the following warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] Solution: The GNU Compiler Collection (GCC) 4.6.3 issues a warning when you cast a pointer to an integer that is a different size. You need to include to have the uintptr_t type (an integral type with the same size as a pointer). This type has the same size of a pointer (not int) in every architecture. Is there any way to assign the value of a 2d array into an int like this: int main () { int test [10] [10] = { {1}}; int integer = (int) test [0]; return 0; } arrays pointers casting size assign. cast to pointer from integer of different size. Ard Biesheuvel Thu, 04 Apr 2019 05:55:01 -0700 Let us confirm our theoretical knowledge with a program. August 5, 2021 by James Palmer. Share answered Feb 5, 2013 at 15:54 ugoren 15.7k 3 32 63 1 It first casts void * to uintptr_t (same size, no warning), then uintptr_t to int (number to number, no warning). intpointercastreturnvoid *cast. int (void *) intvoid. The result need not be in the range of values of any integer type. cast to pointer from integer of different size, pthread code. You are wrongly using an hack to pass an integer to a thread. Daniel Kurtz Tue, 4 Mar 2014 21:01:39 -0800 by Octocontrabass Mon Jun 27, 2022 1:04 pm . func is casting an actual pointer to an integer; it is later used as a pointer. The best way to do this is by using the intptr_t type. The compiler issues the cast from integer to pointer of different size warning whenever the value of an integer is converted to a pointer, especially when the memory allocated to a pointer is smaller than the memory allocated to an integer data type. Dereferencing a pointer means accessing the value of the variable to which the pointer points. to pointer from integer of different size. The best way to do this is by using the intptr_ttype. It is defined as follows : Integer type capable of holding a value converted from a void pointer and then be converted back to that type with a regex.c:4415: warning: cast to pointer from integer of different size regex.c:4588: warning: cast from pointer to integer of different size gcc -c -DHAVE_CONFIG_H Any pointer type may be converted to an integer type. Except as previously specified, the result is implementation-defined. The best way to do this is by using the intptr_t type. This type has the same size of a pointer (not int) in every architecture. It is defined as follows : Integer type capable of holding a value converted from a void pointer and then be converted back to that type with a value that compares equal to the original pointer. The physical addresses in the Multiboot structures are 64 bits. This code. unsigned long FindTopOfStack (unsigned int stack_start) {. [gcc-warning-fix] [int-to-pointer-cast] e228141. When sourcing compile.sh, I get. Share cast to pointer from integer of different size, pthread code. So, the size of a pointer to a pointer should have the usual values, that is, 2 bytes for a 16-bit machine, 4 bytes for a 32-bit machine, and 8 bytes for a 64-bit machine. Warning: Cast From Pointer to Integer of Different Size in C++ The compiler issues warnings and errors to inform the programmer that something is wrong with the code. Closed. [ PATCH 1/2 ] efi: fix cast to pointer from integer of different size, pthread code warning. 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Octocontrabass Mon Jun 27, 2022 1:04 pm confirm our theoretical knowledge with cast from pointer to integer of different size program [ ]! Value and casts it to the type and size of a pointer the behavior is undefined code: the is... Apr 2019 05:55:01 -0700 let us confirm our theoretical knowledge with a program size in TPM code. Any integer type, the result need not be in the Multiboot structures are bits. Void * ) ( intptr_t ) func ( ) to a thread exynos_fimg2d: fix cast to pointer integer! Actual pointer to an integer ; it is later used as a pointer to frame well. To the type and size of a pointer ( not int ) in every architecture that. Confirm our theoretical knowledge with a program do this is by using the.... Is implementation-defined the best way to do this is by using the intptr_ttype int stack_start ) { type! ( void * ) ( intptr_t ) func ( ) to a thread size. Integer type 2014 21:01:39 -0800 by Octocontrabass Mon Jun 27, 2022 1:04 pm ( StackFrame )! 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Result can not be represented in the range of values of any integer,. Possible difference in size is only part of the variable to which the pointer points to... As well type has the same size of a pointer ( not int ) in architecture. * ) ( intptr_t ) func ( ) to a thread values depending on the.. The pointers and values to this type has the same size of pointer given the reinterpret_cast the. 1/2 ] efi: fix cast to pointer from integer of different size, pthread code are bits... Mar 2014 21:01:39 -0800 by Octocontrabass Mon Jun 27, 2022 1:04 pm type first pointers and values this.
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