http://llvm.org/bugs/show_bug.cgi?id=7359
Summary: 'spurious "switch condition has bool value" warning'
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
#include <iostream>
#ifndef static_assert
#define static_assert(a) switch ((int)(a)) case 0: case ((int)(a)):
#endif /* static_assert */
int main() {
static_assert(sizeof(int) == sizeof(unsigned int));
return 0;
}
[gree...@grok2 ~]$ clang++ -Os clang_test2.cc
clang_test2.cc:10:4: warning: switch condition has boolean value
static_assert(sizeof(int) == sizeof(unsigned int));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clang_test2.cc:5:26: note: instantiated from:
#define static_assert(a) switch ((int)(a)) case 0: case ((int)(a)):
^ ~~~~~~~~
1 warning generated.
[gree...@grok2 ~]$
// This is a work-around:
//#define static_assert(a) switch ((a) + 0) case 0: case ((a) + 0):
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