http://llvm.org/bugs/show_bug.cgi?id=21794
Bug ID: 21794
Summary: Tautological constant deduction is incorrect
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
This simple program causes false warning during compilation.
#include <stdint.h>
#include <stdio.h>
int
main(void)
{
uint16_t a = 13;
printf("%d\n", a != ~0);
return 0;
}
test.c:9:22: warning: comparison of constant -1 with expression of type
'uint16_t'
(aka 'unsigned short') is always true
[-Wtautological-constant-out-of-range-compare]
printf("%d\n", a != ~0);
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