Got the bubble sort tests somewhat compiling (needs two consecutive invokations to compile), need to fix implementation bugs in there still.

sorting_algorithms/bubble_sort/bubble_sort.c

@@ -2,6 +2,7 @@
 /* Include guards + include statements. */
 #ifndef BUBBLE_SORT_C
 #define BUBBLE_SORT_C
+#include <stdlib.h>
 #include <string.h>
 #include "bubble_sort.h"
 #include "../utils/swap_void.h"

sorting_algorithms/bubble_sort/bubble_sort.h

@@ -1,8 +1,6 @@
 /* This header defines the function for bubble sort. */
 #ifndef BUBBLE_SORT_H
 #define BUBBLE_SORT_H
-/* Include statements. */
-#include <stdlib.h>
 
 /* Function definitions. */
 void* bubble_sort(void* array, int (*comparison_function)(const void*, const void*), const int length, size_t size);

tests/makefile

@@ -8,7 +8,7 @@ bst_tests.o: bst_tests.c
 	gcc -g -c bst_tests.c
 
 bubble_sort_tests.out: swap_void.o array_print.o bubble_sort_tests.o
-	gcc -g -fsanitize=address -fsanitize=leak -fsanitize=undefined swap_void.o array_print.o bubble_sort_tests.o -o bubble_sort_tests.out -lm
+	gcc -g -fsanitize=address -fsanitize=leak -fsanitize=undefined swap_void.o array_print.o bubble_sort_tests.o -o bubble_sort_tests.out
 
 bubble_sort_tests.o: bubble_sort_tests.c
 	gcc -g -I ../utils -D DEBUG -c bubble_sort_tests.c
@@ -18,7 +18,7 @@ double_linked_list_tests.out: double_linked_list_tests.c
 
 quick_sort_tests.out: array_print.o quick_sort_tests.o
 	#gcc -g -fsanitize=address -fsanitize=leak -fsanitize=undefined quick_sort_tests.c -o quick_sort_tests.out
-	gcc -g -fsanitize=address -fsanitize=leak -fsanitize=undefined array_print.o quick_sort_tests.o -o quick_sort_tests.out -lm
+	gcc -g -fsanitize=address -fsanitize=leak -fsanitize=undefined array_print.o quick_sort_tests.o -o quick_sort_tests.out
 
 quick_sort_tests.o: quick_sort_tests.c
 	gcc -g -D DEBUG -c quick_sort_tests.c

utils/swap_void.c

@@ -6,7 +6,7 @@
 /* Temp should be an allocated buffer, used to do the swap. */
 /* Size should be > 0. */
 /* Expect undefined behavior if conditions aren't met. */
-static inline void swap_void_ptr(void *first, void *second, void *temp, size_t size) {
+extern inline void swap_void_ptr(void *first, void *second, void *temp, size_t size) {
 	/* Swap. */
 	memcpy(temp, first, size);
 	memcpy(first, second, size);

utils/swap_void.h

@@ -4,6 +4,6 @@
 #include <string.h>
 
 /* This function is used to swap void* objects. */
-static inline void swap_void_ptr(void *first, void *second, void *temp, size_t size);
+extern inline void swap_void_ptr(void *first, void *second, void *temp, size_t size);
 
 #endif //SWAP_VOID_H