http://llvm.org/bugs/show_bug.cgi?id=22223
Bug ID: 22223
Summary: inconsistent -Wsign-compare warnings due to type cast
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
If I add the type cast (int)(0 > a), Clang warns. Otherwise not.
$: cat s.c
int a;
void fn1(int b) {
0xEE5FD967FC84F78BLL <= ((int)(0 > a) / (long long)1); //<-warning here
0xEE5FD967FC84F78BLL <= ( (0 > a) / (long long)1); //<-NO warning
}
$:
$: clang-trunk -c s.c -Wsign-compare -Wno-unused-value
s.c:3:24: warning: comparison of integers of different signs: 'unsigned long
long' and 'long long'
[-Wsign-compare]
0xEE5FD967FC84F78BLL <= ((int)(0 > a) / (long long)1); //<-warning here
~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
$:
$: gcc-trunk -c s.c -Wsign-compare
$:
$:
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