https://bugs.llvm.org/show_bug.cgi?id=37865
Bug ID: 37865
Summary: Warn on overflow in user-defined literals
Product: clang
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: zhong...@pku.org.cn
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
The code is as follow:
int operator"" _w(unsigned long long){return 0;}
int main(){
return 12345678901234567890123456789012345678901234567890_w;
}
clang++ produces an error message:
error: integer literal is too large to be represented in any integer type
return 12345678901234567890123456789012345678901234567890_w;
^
1 error generated.
g++ accepts it. Indeed, the code comes from a gcc bug report:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52654
Please check this problem. I believe that it is a bug in clang++.
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