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Test your malloc protection

Shell 30.94% C 60.72% Makefile 8.34%

ft_mallocator's Introduction

Hi there 👋

I'm a 22-year-old student and IT intern @42 Paris.

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ft_mallocator's Issues

record stdout & only display when crash on allocation testing

error while testing bash

How to reproduce:

./mallocator bash

Error

free(): invalid pointer
[CRASH] abort
┗━━ ?? in ??:0 (0x1391)
┗━━ ?? in ??:0 (0x1a31)
┗━━ ?? in ??:0 (0x389ff)
┗━━ programmable_completions in ??:0 (0x8864b)
┗━━ ?? in ??:0 (0x38957)
┗━━ shell_is_restricted in ??:0 (0x2253c)
┗━━ ?? in ??:0 (0x7c7ed)
┗━━ fg_builtin in ??:0 (0x923db)
┗━━ history_builtin in ??:0 (0x9422b)
┗━━ read_builtin in ??:0 (0x96ba2)
┗━━ ?? in ??:0 (0x1999)
┗━━ named_function_string in ??:0 (0x358d8)
┗━━ ?? in ??:0 (0x33603)
┗━━ ?? in ??:0 (0x32fd4)
┗━━ ulimit_builtin in ??:0 (0x9c8ae)
┗━━ file_error in ??:0 (0x48531)
┗━━ shell_execve in ??:0 (0x382f6)
┗━━ ?? in ??:0 (0x38c5d)
┗━━ execute_command_internal in ??:0 (0x3bf1f)
┗━━ execute_command in ??:0 (0x3c559)
┗━━ reader_loop in ??:0 (0x22cb7)
┗━━ main in ??:0 (0x218e1)
┗━━ ?? in ??:0 (0x1adc)
┗━━ ?? in ??:0 (0x2328f)
┗━━ ?? in ??:0 (0x23349)
┗━━ ?? in ??:0 (0x1b6c)
┗━━ _start in ??:0 (0x2191d)

Makefile improvement

-malloc_test: $(OBJS) $(MAIN_OBJ) $(LIBFT)
-       @$(MAKE) DEBUG=1
-       $(CC) $(CFLAGS) $^ -fsanitize=undefined -rdynamic -o $@ $(INCLUDE_FLAGS) -L../ft_mallocator -lmallocator
+malloc_test: debug
+       $(CC) $(CFLAGS) $(OBJS) $(MAIN_OBJ) $(LIBFT) -fsanitize=undefined -rdynamic -o $@ $(INCLUDE_FLAGS) $(LIB_FLAGS) -L. -lmallocator

The malloc_test rule should be dependent on a rule like debug. This enforces the object files to be created with -g symbols. The debug rule and CFLAGS variable should look something like this:

CFLAGS			=-Wall -Wextra -Werror$(if $(DEBUG), -g -D DEBUG=1)$(if $(FSAN), -g -D DEBUG=1 -fsanitize=address)
debug:
	@$(MAKE) DEBUG=1

rebug: fclean
	@$(MAKE) debug