The Simple Way To Detect Heap Memory Pitfalls In C++ And C

Collect action done

…::: Heap static route :::…
File path: samplers/example3.c
Func name: main
Var name: new
line: 10: array = new obj[100];
Sinks:
line: 10: array = new obj[100];
Taint: True
In Loop: false

…::: Heap static route :::…
File path: samplers/example3.c
Func name: while
Var name: array
line: 27: array = malloc(1);
Sinks:
line: 27: array = malloc(1);
Taint: True
In Loop: false
line: 28: array=2;
Taint: false
In Loop: false
line: 30: array = malloc(3);
Taint: True
In Loop: false

…::: Heap static route :::…
File path: samplers/example5.c
Func name: main
Var name: ch_ptr
line: 8: ch_ptr = malloc(100);
Sinks:
line: 8: ch_ptr = malloc(100);
Taint: True
In Loop: false
line: 11: free(ch_ptr);
Taint: True
In Loop: false< br/> line: 12: free(ch_ptr);
Taint: True
In Loop: false

…::: Heap static route :::…
File path: samplers/example1.c
Func name: main
Var name: buf1R1
line: 13: buf1R1 = (char *) malloc(BUFSIZER1);
Sinks:
line: 13: buf1R1 = (char *) malloc(BUFSIZER1);
Taint: True
In Loop: false
line: 26: free(buf1R1);
Taint: True
In Loop: false
line: 30: if (buf1R1) {
Taint: false
In Loop: false
line: 31: free(buf1R1);
Taint: True
In Loop: false

…::: Heap static route :::…
File path: samplers/example2.c
Func name: main
Var name: ch_ptr
line: 7: ch_ptr=malloc(100);
Sinks:
line: 7: ch_ptr=malloc(100);
Taint: True
In Loop: false
line: 11: ch_ptr=”A”;
Taint: false
In Loop: True
line: 12: free(ch_ptr);
Taint: True
In Loop: True
line: 13: printf(“%s\n”, ch_pt r);
Taint: false
In Loop: True

…::: Heap static route :::…
File path: samplers/example4.c
Func name: main
Var name: ch_ptr
line: 8: ch_ptr = malloc(100);
Sinks:
line: 8: ch_ptr = malloc(100);
Taint: True
In Loop: false
line: 13: ch_ptr=”A”;
Taint: false
In Loop: false
line: 14: free(ch_ptr);
Taint: True
In Loop: false
line: 15: printf(“%s\n”, ch_ptr);
Taint: false
In Loop: false

…::: Heap static route :::…
File path: samplers/example6.c
Func name: main
Var name: ch_ptr
line: 8: ch_ptr = malloc(100);
Sinks:
line: 8: ch_ptr = malloc(100);
Taint: True
In Loop: false
line: 11: free(ch_ptr);
Taint: True
In Loop: false
line: 13: ch_ptr = malloc(500);
Taint: True
In Loop: false

…::: Heap static route :::…
File path: samplers/example7.c
Fu nc name: special
Var name: ch_ptr
line: 8: ch_ptr = malloc(100);
Sinks:
line: 8: ch_ptr = malloc(100);
Taint: True
In Loop: false
line: 15: free(ch_ptr);
Taint: True
In Loop: false
line: 16: ch_ptr = malloc(500);
Taint: True
In Loop: false
line: 17: ch_ptr=NULL;
Taint: false
In Loop: false
line: 25: char *ch_ptr = NULL;
Taint: false
In Loop: false

…::: Heap static route :::…
File path: samplers/example7.c
Func name: main
Var name: ch_ptr
line: 27: ch_ptr = malloc(100);
Sinks:
line: 27: ch_ptr = malloc(100);
Taint: True
In Loop: false
line: 30: free(ch_ptr);
Taint: True
In Loop: false
line: 32: ch_ptr = malloc(500);
Taint: True
In Loop: false

>>—–> Memory leak analyser

…::: Memory leak analyser :::…
File path: samplers/example3.c
F unction name: main
memory leak found!
line: 10: array = new obj[100];

…::: Memory leak analyser :::…
File path: samplers/example3.c
Function name: while
memory leak found!
line: 27: array = malloc(1);
line: 28: array=2;
line: 30: array = malloc(3);

…::: Memory leak analyser :::…
File path: samplers/example5.c
Function name: main
memory leak found!
line: 8: ch_ptr = malloc(100);
line: 11: free(ch_ptr);
line: 12: free(ch_ptr);

…::: Memory leak analyser :::…
File path: samplers/example1.c
Function name: main
memory leak found!
line: 13: buf1R1 = (char *) malloc(BUFSIZER1);
line: 26: free(buf1R1);
line: 30: if (buf1R1) {
line: 31: free(buf1R1);

…::: Memory leak analyser :::…
File path: samplers/example2.c
Function name: main
memory leak found!
Maybe the function to liberate memory can be in a loo p context!
line: 7: ch_ptr=malloc(100);
line: 11: ch_ptr=”A”;
line: 12: free(ch_ptr);
line: 13: printf(“%s\n”, ch_ptr);

…::: Memory leak analyser :::…
File path: samplers/example6.c
Function name: main
memory leak found!
line: 8: ch_ptr = malloc(100);
line: 11: free(ch_ptr);
line: 13: ch_ptr = malloc(500);

…::: Memory leak analyser :::…
File path: samplers/example7.c
Function name: special
memory leak found!
line: 8: ch_ptr = malloc(100);
line: 15: free(ch_ptr);
line: 16: ch_ptr = malloc(500);
line: 17: ch_ptr=NULL;
line: 25: char *ch_ptr = NULL;

…::: Memory leak analyser :::…
File path: samplers/example7.c
Function name: main
memory leak found!
line: 27: ch_ptr = malloc(100);
line: 30: free(ch_ptr);
line: 32: ch_ptr = malloc(500);

>>—–> Start double free analyser

…::: Double free analys er :::…
File path: samplers/example5.c
Function name: main
Double free found!
line: 8: ch_ptr = malloc(100);
line: 11: free(ch_ptr);
line: 12: free(ch_ptr);

…::: Double free analyser :::…
File path: samplers/example1.c
Function name: main
Double free found!
line: 13: buf1R1 = (char *) malloc(BUFSIZER1);
line: 26: free(buf1R1);
line: 30: if (buf1R1) {
line: 31: free(buf1R1);

…::: Double free analyser :::…
File path: samplers/example2.c
Function name: main
Double free found!
Maybe the function to liberate memory can be in a loop context!
line: 7: ch_ptr=malloc(100);
line: 11: ch_ptr=”A”;
line: 12: free(ch_ptr);
line: 13: printf(“%s\n”, ch_ptr);

>>—–> Start use after free analyser

…::: Use after free analyser :::…
File path: samplers/example5.c
Function name: main
Use after free found
l ine: 8: ch_ptr = malloc(100);
line: 11: free(ch_ptr);
line: 12: free(ch_ptr);

…::: Use after free analyser :::…
File path: samplers/example1.c
Function name: main
Use after free found
line: 13: buf1R1 = (char *) malloc(BUFSIZER1);
line: 26: free(buf1R1);
line: 30: if (buf1R1) {
line: 31: free(buf1R1);

…::: Use after free analyser :::…
File path: samplers/example2.c
Function name: main
Use after free found
line: 7: ch_ptr=malloc(100);
line: 11: ch_ptr=”A”;
line: 12: free(ch_ptr);
line: 13: printf(“%s\n”, ch_ptr);

…::: Use after free analyser :::…
File path: samplers/example4.c
Function name: main
Use after free found
line: 8: ch_ptr = malloc(100);
line: 13: ch_ptr=”A”;
line: 14: free(ch_ptr);
line: 15: printf(“%s\n”, ch_ptr);

…::: Use after free analyser :::…
File path: samplers/example6.c
Function name: main
Use after free found
line: 8: ch_ptr = malloc(100);
line: 11: free(ch_ptr);
line: 13: ch_ptr = malloc(500);

…::: Use after free analyser :::…
File path: samplers/example7.c
Function name: special
Use after free found
line: 8: ch_ptr = malloc(100);
line: 15: free(ch_ptr);
line: 16: ch_ptr = malloc(500);
line: 17: ch_ptr=NULL;
line: 25: char *ch_ptr = NULL;

…::: Use after free analyser :::…
File path: samplers/example7.c
Function name: main
Use after free found
line: 27: ch_ptr = malloc(100);
line: 30: free(ch_ptr);
line: 32: ch_ptr = malloc(500);