1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
// RUN: %clang_analyze_cc1 -triple x86_64-pc-linux-gnu -analyzer-checker=core,valist.Uninitialized,valist.CopyToSelf -analyzer-output=text -verify %s
#include "Inputs/system-header-simulator-for-valist.h"
// This is called in call_inlined_uses_arg(),
// and the warning is generated during the analysis of call_inlined_uses_arg().
void inlined_uses_arg(va_list arg) {
(void)va_arg(arg, int); // expected-warning{{va_arg() is called on an uninitialized va_list}}
// expected-note@-1{{va_arg() is called on an uninitialized va_list}}
}
void call_inlined_uses_arg(int fst, ...) {
va_list va;
inlined_uses_arg(va); // expected-note{{Calling 'inlined_uses_arg'}}
}
void f6(va_list *fst, ...) {
va_start(*fst, fst);
(void)va_arg(*fst, int);
va_end(*fst);
}
int va_list_get_int(va_list *va) {
return va_arg(*va, int); // no-warning
}
struct MyVaList {
va_list l;
};
int va_list_get_int2(struct MyVaList *va) {
return va_arg(va->l, int); // no-warning
}
void call_vprintf_bad(int isstring, ...) {
va_list va;
vprintf(isstring ? "%s" : "%d", va); // expected-warning{{Function 'vprintf' is called with an uninitialized va_list argument}}
// expected-note@-1{{Function 'vprintf' is called with an uninitialized va_list argument}}
// expected-note@-2{{Assuming 'isstring' is 0}}
// expected-note@-3{{'?' condition is false}}
}
void call_vsprintf_bad(char *buffer, ...) {
va_list va;
va_start(va, buffer); // expected-note{{Initialized va_list}}
va_end(va); // expected-note{{Ended va_list}}
vsprintf(buffer, "%s %d %d %lf %03d", va); // expected-warning{{Function 'vsprintf' is called with an uninitialized va_list argument}}
// expected-note@-1{{Function 'vsprintf' is called with an uninitialized va_list argument}}
}
|
