Viewing file:  analyzer-verbosity-0.c (3.68 KB) -rw-r--r--
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/* { dg-additional-options "-fdiagnostics-show-line-numbers -fdiagnostics-path-format=inline-events -fdiagnostics-show-caret -fanalyzer-verbosity=0" } */
/* { dg-enable-nn-line-numbers "" } */
#include <stdlib.h>
void calls_free_1 (void *ptr)
{
free (ptr); /* { dg-warning "double-'free' of 'ptr'" } */
}
void test_1 (void *ptr, int a, int b)
{
if (a)
calls_free_1 (ptr);
if (b)
{
}
else
calls_free_1 (ptr);
}
/* { dg-begin-multiline-output "" }
NN | free (ptr);
| ^~~~~~~~~~
'test_1': event 1
|
| NN | calls_free_1 (ptr);
| | ^~~~~~~~~~~~~~~~~~
| | |
| | (1) calling 'calls_free_1' from 'test_1'
|
+--> 'calls_free_1': event 2
|
| NN | free (ptr);
| | ^~~~~~~~~~
| | |
| | (2) first 'free' here
|
<------+
|
'test_1': events 3-4
|
| NN | calls_free_1 (ptr);
| | ^~~~~~~~~~~~~~~~~~
| | |
| | (3) returning to 'test_1' from 'calls_free_1'
|......
| NN | calls_free_1 (ptr);
| | ~~~~~~~~~~~~~~~~~~
| | |
| | (4) passing freed pointer 'ptr' in call to 'calls_free_1' from 'test_1'
|
+--> 'calls_free_1': event 5
|
| NN | free (ptr);
| | ^~~~~~~~~~
| | |
| | (5) second 'free' here; first 'free' was at (2)
|
{ dg-end-multiline-output "" } */
void calls_free_2 (void *ptr)
{
free (ptr); /* { dg-warning "double-'free' of 'ptr'" } */
}
void test_2 (void *ptr, int a, int b)
{
switch (a)
{
default:
break;
case 1:
break;
case 3:
calls_free_2 (ptr);
break;
}
switch (b)
{
default:
calls_free_2 (ptr);
break;
case 1:
break;
case 42:
break;
}
}
/* { dg-begin-multiline-output "" }
NN | free (ptr);
| ^~~~~~~~~~
'test_2': event 1
|
| NN | calls_free_2 (ptr);
| | ^~~~~~~~~~~~~~~~~~
| | |
| | (1) calling 'calls_free_2' from 'test_2'
|
+--> 'calls_free_2': event 2
|
| NN | free (ptr);
| | ^~~~~~~~~~
| | |
| | (2) first 'free' here
|
<------+
|
'test_2': events 3-4
|
| NN | calls_free_2 (ptr);
| | ^~~~~~~~~~~~~~~~~~
| | |
| | (3) returning to 'test_2' from 'calls_free_2'
|......
| NN | calls_free_2 (ptr);
| | ~~~~~~~~~~~~~~~~~~
| | |
| | (4) passing freed pointer 'ptr' in call to 'calls_free_2' from 'test_2'
|
+--> 'calls_free_2': event 5
|
| NN | free (ptr);
| | ^~~~~~~~~~
| | |
| | (5) second 'free' here; first 'free' was at (2)
|
{ dg-end-multiline-output "" } */
// TODO: range cases
/* The call/return to this function shouldn't appear in the path. */
void called_by_test_3 (void)
{
}
void test_3 (void *ptr)
{
free (ptr);
called_by_test_3 ();
free (ptr); /* { dg-warning "double-'free' of 'ptr'" } */
}
/* { dg-begin-multiline-output "" }
NN | free (ptr);
| ^~~~~~~~~~
'test_3': events 1-2
|
| NN | free (ptr);
| | ^~~~~~~~~~
| | |
| | (1) first 'free' here
| NN | called_by_test_3 ();
| NN | free (ptr);
| | ~~~~~~~~~~
| | |
| | (2) second 'free' here; first 'free' was at (1)
|
{ dg-end-multiline-output "" } */
|
