https://bugs.llvm.org/show_bug.cgi?id=40566
Bug ID: 40566
Summary: Libc++ is not Implicit Integer Truncation Sanitizer
clean
Product: libc++
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: All Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: eugeni.stepa...@gmail.com
CC: llvm-bugs@lists.llvm.org, mclow.li...@gmail.com
#include <sstream>
int main() {
std::stringstream ss;
ss.write("\xd1", 1);
}
with -fsanitize=implicit-signed-integer-truncation gives:
include/c++/v1/sstream:561:28: runtime error: implicit conversion from type
'std::__1::basic_stringbuf<char, std::__1::char_traits<char>,
std::__1::allocator<char> >::int_type' (aka 'int') of value 209 (32-bit,
signed) to type 'std::__1::basic_streambuf<char, std::__1::char_traits<char>
>::char_type' (aka 'char') changed the value to -47 (8-bit, signed)
basic_stringbuf::overflow converts an int, which is the result of char ->
unsigned char -> int conversion, directly to (signed) char.
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
