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C++: Add uninitialized variable FP test

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This commit is contained in:
Jeroen Ketema
2025-09-11 10:22:41 +02:00
parent 59fc7aa8e1
commit d224f85b24
2 changed files with 44 additions and 0 deletions
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2
cpp/ql/test/query-tests/Security/CWE/CWE-457/semmle/tests/UninitializedLocal.expected
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@@ -14,6 +14,7 @@ nodes
| test.cpp:466:6:466:6 | definition of x | semmle.label | definition of x |
| test.cpp:472:6:472:6 | definition of x | semmle.label | definition of x |
| test.cpp:479:6:479:6 | definition of x | semmle.label | definition of x |
| too_many_constants.cpp:32:9:32:9 | definition of m | semmle.label | definition of m |
#select
| errors.cpp:14:18:14:18 | x | errors.cpp:13:7:13:7 | definition of x | errors.cpp:13:7:13:7 | definition of x | The variable $@ may not be initialized at this access. | errors.cpp:13:7:13:7 | x | x |
| test.cpp:12:6:12:8 | foo | test.cpp:11:6:11:8 | definition of foo | test.cpp:11:6:11:8 | definition of foo | The variable $@ may not be initialized at this access. | test.cpp:11:6:11:8 | foo | foo |
@@ -29,3 +30,4 @@ nodes
| test.cpp:468:7:468:7 | x | test.cpp:466:6:466:6 | definition of x | test.cpp:466:6:466:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:466:6:466:6 | x | x |
| test.cpp:475:2:475:2 | x | test.cpp:472:6:472:6 | definition of x | test.cpp:472:6:472:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:472:6:472:6 | x | x |
| test.cpp:482:7:482:7 | x | test.cpp:479:6:479:6 | definition of x | test.cpp:479:6:479:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:479:6:479:6 | x | x |
| too_many_constants.cpp:41:10:41:10 | m | too_many_constants.cpp:32:9:32:9 | definition of m | too_many_constants.cpp:32:9:32:9 | definition of m | The variable $@ may not be initialized at this access. | too_many_constants.cpp:32:9:32:9 | m | m |

42
cpp/ql/test/query-tests/Security/CWE/CWE-457/semmle/tests/too_many_constants.cpp Normal file
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@@ -0,0 +1,42 @@
struct S {
int a;
int b;
int c;
unsigned long *d;
union {
struct {
const char *e;
int f;
S *g;
const char *h;
int i;
bool j;
bool k;
const char *l;
char **m;
} n;
struct {
bool o;
bool p;
} q;
} r;
};
int too_many_constants_init(S *s);
char *too_many_constants(const char *h, bool k, int i) {
const char *e = "";
char l[64] = "";
char *m;
S s[] = {
{.a = 0, .c = 0, .d = nullptr, .r = {.n = {.e = e, .f = 1, .g = nullptr, .h = h, .i = i, .j = false, .k = k, .l = l, .m = &m}}},
{.a = 0, .c = 0, .d = nullptr, .r = {.q = {.o = true, .p = true}}}
};
too_many_constants_init(s);
return m;
}