https://llvm.org/bugs/show_bug.cgi?id=30529
Bug ID: 30529
Summary: clang generates warnings if use preprocessed files.
Product: clang
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
#define T(x) (x==1)
int main(){
int x = 1;
if (T(x)) {
return 0;}
return 1;
}
clang -Wall a.c returns no warning.
clang a.c -E > a.i
clang -Wall a.i
returns
a.c:5:9: warning: equality comparison with extraneous parentheses
[-Wparentheses-equality]
if ((x==1)) {
~^~~
a.c:5:9: note: remove extraneous parentheses around the comparison to silence
this warning
if ((x==1)) {
~ ^ ~
a.c:5:9: note: use '=' to turn this equality comparison into an assignment
if ((x==1)) {
^~
=
1 warning generated.
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