fix: remove minor memory leaks + clean up correctly

h/bytecode.h

@@ -31,3 +31,4 @@ int write_all_data(void);
 int write_data(struct rawdata);
 
 void free_instructions(void);
+void free_data(void);

h/elf/output.h

@@ -45,3 +45,4 @@ int alloc_output(void);
 size_t write_sectiondata(const void *, size_t, struct sectionpos);
 
 int flush_output(FILE *);
+void free_output(void);

h/symbols.h

@@ -32,4 +32,4 @@ struct elf64sym create_symtab_entry(const char *);
 size_t calc_symtab_str_buf_size(void);
 char *create_symtab_str_buf(size_t);
 
-void free_labels(void);
+void free_symbols(void);

meson.build

@@ -6,6 +6,7 @@ project(
         'warning_level=3',
         'b_lto=true',
         'b_pie=true',
+        'optimization=3',
     ],
     version: '0.0.1-alpha',
 )

src/bytecode.c

@@ -123,4 +123,12 @@ void free_instructions(void)
 {
 	free(instructions);
 	instructions = NULL;
+	instructions_size = 0;
+}
+
+void free_data(void)
+{
+	free(dataitems);
+	dataitems = NULL;
+	dataitems_size = 0;
 }

src/elf/output.c

@@ -255,3 +255,9 @@ int flush_output(FILE *elf)
 
 	return 0;
 }
+
+void free_output(void)
+{
+	for (int i = 0; i < SECTION_COUNT; i++)
+		free(outputsections[i].contents);
+}

src/form/base.c

@@ -221,6 +221,9 @@ struct bytecode form_load_pseudo(const char *name, struct idata instruction,
 	memcpy(data, upper.data, upper.size);
 	memcpy(data + upper.size, lower.data, lower.size);
 
+	free(upper.data);
+	free(lower.data);
+
 	return (struct bytecode){
 		.size = upper.size + lower.size,
 		.data = data,

src/generation.c

@@ -98,7 +98,10 @@ void parse_file(FILE *ifp, FILE *ofp)
 
 	flush_output(ofp);
 
+	free_output();
 	free_instructions();
+	free_data();
+	free_symbols();
 }
 
 static int parse_line_trimmed(char *, struct sectionpos);
@@ -136,7 +139,9 @@ int symbol_forward_declare(char *line)
 		return 0;
 	*colon = '\0';
 	char *name = trim_whitespace(line);
-	return !create_symbol(name, SYMBOL_LABEL);
+	struct symbol *sym = create_symbol(name, SYMBOL_LABEL);
+	free(name);
+	return !sym;
 }
 
 int parse_label(char *line, struct sectionpos position)

src/parse.c

@@ -309,18 +309,6 @@ struct args parse_stype(char *argstr)
 	logger(DEBUG, no_error, "Registers parsed %d(x%d), x%d", args.imm,
 	       args.rs1, args.rs2);
 
-	free(first);
-	free(second);
-
-	logger(DEBUG, no_error, "Registers parsed x%d, x%d, %d", args.rs1,
-	       args.rs2, args.imm);
-
-	free(first);
-	free(second);
-
-	logger(DEBUG, no_error, "Registers parsed x%d, x%d, %d", args.rs1,
-	       args.rs2, args.imm);
-
 	return args;
 }
 

src/symbols.c

@@ -81,7 +81,7 @@ char *create_symtab_str_buf(size_t sz)
 	return buf;
 }
 
-void free_labels(void)
+void free_symbols(void)
 {
 	for (size_t hash = 0; hash < SYMBOLMAP_ENTRIES; hash++) {
 		for (size_t index = 0; index < symbols[hash].count; index++)