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
|
// RUN: %clang_cc1 -verify -fsyntax-only -Wshadow -Wold-style-cast %s
// Test that macro expansions from system headers don't trigger 'syntactic'
// warnings that are not actionable.
#ifdef IS_SYSHEADER
#pragma clang system_header
#define SANITY(a) (a / 0)
#define SHADOW(a) __extension__({ int v = a; v; })
#define OLD_STYLE_CAST(a) ((int) (a))
#else
#define IS_SYSHEADER
#include __FILE__
void testSanity() {
// Validate that the test is set up correctly
int i = SANITY(0); // expected-warning {{division by zero is undefined}}
}
void PR16093() {
// no -Wshadow in system macro expansion
int i = SHADOW(SHADOW(1));
}
void PR18147() {
// no -Wold_style_cast in system macro expansion
int i = OLD_STYLE_CAST(0);
}
#endif
|
