phunix/external/bsd/llvm/dist/clang/test/SemaCXX/warn-sysheader-macro.cpp
Lionel Sambuc 0a6a1f1d05 NetBSD re-synchronization of the source tree
This brings our tree to NetBSD 7.0, as found on -current on the
10-10-2015.

This updates:
 - LLVM to 3.6.1
 - GCC to GCC 5.1
 - Replace minix/commands/zdump with usr.bin/zdump
 - external/bsd/libelf has moved to /external/bsd/elftoolchain/
 - Import ctwm
 - Drop sprintf from libminc

Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
2016-01-13 20:32:14 +01:00

36 lines
744 B
C++

// 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