散発的なCエラーapear

Question

私はCでプログラミングするのが初めてで、主にそれを使って遊んでいます（私は通常Javaで動作します）ので、これが明白なエラーであれば私の無知を許してください...私はちょうどシンプルなテキストベースのSpace Simと私は散発的に2〜3回実行され、私が解読するのに苦労している2つの異なる奇妙なエラーが発生します（一度に1つしか表示されません）。私は変数を間違って割り当てたと仮定していますが、それを指摘して助けてもらえます。

コードは3つのファイルに分割されています

Physics.c：

typedef enum { false, true } bool; //define what a boolean is 

//define a vector 
typedef struct { 
    int x; 
    int y; 
} Vector; 

bool compareVectors(Vector vectorA, Vector vectorB){ 
    if ((vectorA.x == vectorB.x) && (vectorA.y == vectorB.y)){ 
     return true; 
    } else { 
     return false; 
    } 
} 

SPACE.C：

#include <stdio.h> 
#include <stdlib.h> 
#include "Physics.c" //includes space 

enum Type { 
    craft = 0, 
    planet, 
    star 
}; 


typedef struct { 
    enum Type type; 
    Vector position; 
} Object; 

typedef struct { 
    Object *array; 
    int used; 
    int size; 

} Space; 


void initSpace(Space *a, int initialSize) { 
    a->array = (Object *)malloc(initialSize * sizeof(int)); 
    a->used = 0; 
    a->size = initialSize; 
} 

//inserts a new object in space and returns the location of the new object in the array 
int insertToSpace(Space *a, Object element) { 
    if (a->used == a->size) { 
     a->size *= 2; 
     a->array = (Object *)realloc(a->array, a->size * sizeof(int)); 
    } 
    a->array[a->used++] = element; 

    return a->used - 1; 
} 

void freeSpaceArray(Space *a) { 
    free(a->array); 
    a->array = NULL; 
    a->used = a->size = 0; 
} 

//creates a new object in space and returns the location of the object in the array 
int createObjectInSpace(Space *a, int type, int xPos, int yPos){ 
    Object newObject; 
    Vector tempVector; 

    newObject.type = type; 
    tempVector.x = xPos; 
    tempVector.y = yPos; 
    newObject.position = tempVector; 

    return insertToSpace(a, newObject); 
} 

//returns the number of objects at that location in space based on Vector location 
int objectsAtLocationVector(Space *a, Vector pos){ 
    int count = 0; 
    for (int i = 0; i < a->used; i++){ 
     if (compareVectors(a->array[i].position, pos)){ 
      count++; 
     } 
    } 
    return count; 
} 

//returns the number of objects at that location in space, based on an x/y int location 
int objectsAtLocationInt(Space *a, int xPos, int yPos){ 
    Vector tempVector; 
    tempVector.x = xPos; 
    tempVector.y = yPos; 
    return objectsAtLocationVector(a, tempVector); 
} 

//returns a list of all objects at the specified location vector 
Space getObjectsAtLocationVector(Space *space, Vector pos){ 
    Space newSpace; 
    int noOfObjects = objectsAtLocationVector(space, pos); 

    initSpace(&newSpace, noOfObjects); 

    if (noOfObjects > 0){ 
     for (int i = 0; i < space->used; i++){ 
      if (compareVectors(space->array[i].position, pos)){ 
       insertToSpace(&newSpace, space->array[i]); 
      } 
     } 
    } 

    return newSpace; 
} 
//returns a list of all objects at the specified integer location 
Space getObjectsAtLocationInt(Space *space, int xPos, int yPos){ 
    Vector tempVector; 
    tempVector.x = xPos; 
    tempVector.y = yPos; 
    return getObjectsAtLocationVector(space, tempVector); 
} 

メイン（Space_In_C.c）：

#include <stdio.h> 
#include "Space.c" //includes space 

//Setup the main variables 
void setup(Vector *myShip, Space *space){ 
    myShip -> x = 0; 
    myShip -> y = 0; 

    initSpace(space, 10); //initialise the space array 

    return; 
} 

int main(int argc, char *argv[]) { 
    Vector myShip; //create the Vector that stores the ships location 
    Space space; //create the Space array 

    setup(&myShip, &space); //set up all key variables 

    createObjectInSpace(&space, planet, 7, 5); 
    createObjectInSpace(&space, craft, 7, 5); 

    Space objects = getObjectsAtLocationInt(&space, 7, 5); 

    printf("%d", objects.array[1].type); 

    return 0; 
} 

ここに最初のエラーがあります：

Terminated due to signal: SEGMENTATION FAULT (11) 
0 lli      0x000000010705dda9 void std::__1::seed_seq::generate<unsigned int*>(unsigned int*, unsigned int*) + 9993 
1 lli      0x000000010705e83b void std::__1::seed_seq::generate<unsigned int*>(unsigned int*, unsigned int*) + 12699 
2 libsystem_platform.dylib 0x00007fffbd52fbba _sigtramp + 26 
3 libsystem_platform.dylib 0x00007fff59489ce0 _sigtramp + 2616566080 
4 lli      0x0000000106f303fe llvm::raw_ostream& llvm::operator<<<llvm::BasicBlock>(llvm::raw_ostream&, llvm::DomTreeNodeBase<llvm::BasicBlock> const*) + 12270 
5 lli      0x0000000106fe21f6 llvm::SmallVectorImpl<std::__1::pair<unsigned int, llvm::TypedTrackingMDRef<llvm::MDNode> > >::operator=(llvm::SmallVectorImpl<std::__1::pair<unsigned int, llvm::TypedTrackingMDRef<llvm::MDNode> > >&&) + 4038 
6 lli      0x0000000106d2376f std::__1::__tree<std::__1::__value_type<llvm::StringRef, llvm::StringRef>, std::__1::__map_value_compare<llvm::StringRef, std::__1::__value_type<llvm::StringRef, llvm::StringRef>, std::__1::less<llvm::StringRef>, true>, std::__1::allocator<std::__1::__value_type<llvm::StringRef, llvm::StringRef> > >::destroy(std::__1::__tree_node<std::__1::__value_type<llvm::StringRef, llvm::StringRef>, void*>*) + 23615 
7 lli      0x0000000106d20b4e std::__1::__tree<std::__1::__value_type<llvm::StringRef, llvm::StringRef>, std::__1::__map_value_compare<llvm::StringRef, std::__1::__value_type<llvm::StringRef, llvm::StringRef>, std::__1::less<llvm::StringRef>, true>, std::__1::allocator<std::__1::__value_type<llvm::StringRef, llvm::StringRef> > >::destroy(std::__1::__tree_node<std::__1::__value_type<llvm::StringRef, llvm::StringRef>, void*>*) + 12318 
8 lli      0x0000000106d20c9e std::__1::__tree<std::__1::__value_type<llvm::StringRef, llvm::StringRef>, std::__1::__map_value_compare<llvm::StringRef, std::__1::__value_type<llvm::StringRef, llvm::StringRef>, std::__1::less<llvm::StringRef>, true>, std::__1::allocator<std::__1::__value_type<llvm::StringRef, llvm::StringRef> > >::destroy(std::__1::__tree_node<std::__1::__value_type<llvm::StringRef, llvm::StringRef>, void*>*) + 12654 
9 lli      0x0000000106788426 void std::__1::vector<unsigned long long, std::__1::allocator<unsigned long long> >::__push_back_slow_path<unsigned long long>(unsigned long long&&) + 24694 
10 libsystem_c.dylib  0x00007fffbd3b717f __cxa_finalize_ranges + 339 
11 libsystem_c.dylib  0x00007fffbd3b74b2 exit + 55 
12 lli      0x0000000106d22d56 std::__1::__tree<std::__1::__value_type<llvm::StringRef, llvm::StringRef>, std::__1::__map_value_compare<llvm::StringRef, std::__1::__value_type<llvm::StringRef, llvm::StringRef>, std::__1::less<llvm::StringRef>, true>, std::__1::allocator<std::__1::__value_type<llvm::StringRef, llvm::StringRef> > >::destroy(std::__1::__tree_node<std::__1::__value_type<llvm::StringRef, llvm::StringRef>, void*>*) + 21030 
13 lli      0x0000000106788290 void std::__1::vector<unsigned long long, std::__1::allocator<unsigned long long> >::__push_back_slow_path<unsigned long long>(unsigned long long&&) + 24288 
14 libdyld.dylib   0x00007fffbd322255 start + 1 
15 libdyld.dylib   0x0000000000000002 start + 1120787886 
Stack dump: 
0. Program arguments: lli /var/folders/9k/f9_xm4857vq6_fysth4wl5mh0000gn/T/com.coderunnerapp.CodeRunner/CodeRunner/clang/Space_In_C.ll 

そして、2番目のエラー：大規模なコードダンプの

Terminated due to signal: ABORT TRAP (6) 
    lli(5537,0x7fffc60423c0) malloc: *** error for object 0x7ff8e8603fc0: incorrect checksum for freed object - object was probably modified after being freed. 
    *** set a breakpoint in malloc_error_break to debug 
    00 lli      0x0000000107f84da9 void std::__1::seed_seq::generate<unsigned int*>(unsigned int*, unsigned int*) + 9993 
    1 lli      0x0000000107f8583b void std::__1::seed_seq::generate<unsigned int*>(unsigned int*, unsigned int*) + 12699 
    2 libsystem_platform.dylib 0x00007fffbd52fbba _sigtramp + 26 
    3 libsystem_platform.dylib 0x00000001109c10d0 _sigtramp + 1397298480 
    4 libsystem_c.dylib  0x00007fffbd3b6420 abort + 129 
    5 libsystem_malloc.dylib 0x00007fffbd4b0fb1 szone_error + 626 
    6 libsystem_malloc.dylib 0x00007fffbd4a6fbf tiny_free_list_remove_ptr + 292 
    7 libsystem_malloc.dylib 0x00007fffbd4bb932 tiny_free_no_lock + 1484 
    8 libsystem_malloc.dylib 0x00007fffbd4bc0f3 free_tiny + 671 
    9 lli      0x0000000107c4ca82 void std::__1::vector<llvm::JITEventListener*, std::__1::allocator<llvm::JITEventListener*> >::__push_back_slow_path<llvm::JITEventListener* const&>(llvm::JITEventListener* const&&&) + 7122 
    10 lli      0x00000001076af1c5 void std::__1::vector<unsigned long long, std::__1::allocator<unsigned long long> >::__push_back_slow_path<unsigned long long>(unsigned long long&&) + 24085 
    11 libdyld.dylib   0x00007fffbd322255 start + 1 
    12 libdyld.dylib   0x0000000000000002 start + 1120787886 
    Stack dump: 
    0. Program arguments: lli /var/folders/9k/f9_xm4857vq6_fysth4wl5mh0000gn/T/com.coderunnerapp.CodeRunner/CodeRunner/clang/Space_In_C.ll 

謝罪！どんな助けでも大歓迎です！ initSpaceで

Answer 1

、あなたが（列挙型とベクトルが含まれている）オブジェクトの配列にメモリを割り当てるために欠けているように見えますが、あなただけのint型の

a->array = (Object *)malloc(initialSize * sizeof(int)); 

の配列のための十分なメモリを割り当てています

a->array = (Object *)malloc(initialSize * sizeof(Object)); 

他のバグもあるかもしれませんが、それは際立っています。