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0993ad65cc
This patch improves the wording of the state-transition event (1) in
the -Wanalyzer-null-dereference diagnostic for:
void test (void)
{
int *p = NULL;
*p = 1;
}
taking the path description from:
‘test’: events 1-2
|
| 5 | int *p = NULL;
| | ^
| | |
| | (1) assuming ‘p’ is NULL
| 6 | *p = 1;
| | ~~~~~~
| | |
| | (2) dereference of NULL ‘p’
|
to:
‘test’: events 1-2
|
| 5 | int *p = NULL;
| | ^
| | |
| | (1) ‘p’ is NULL
| 6 | *p = 1;
| | ~~~~~~
| | |
| | (2) dereference of NULL ‘p’
|
since the "assuming" at (1) only makes sense for state transitions
due to comparisons, not for assignments.
gcc/analyzer/ChangeLog:
* sm-malloc.cc (malloc_diagnostic::describe_state_change): For
transition to the "null" state, only say "assuming" when
transitioning from the "unchecked" state.
gcc/testsuite/ChangeLog:
* gcc.dg/analyzer/malloc-1.c (test_48): New.
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