Silenced compiler warnings can create dangerous data truncation bugs.

A DEV Community post demonstrates how using a static cast to silence a compiler warning can lead to undetected data truncation. In the example, a 32-bit integer holding a payload size is cast to a 16-bit field, silently truncating large values like 65552 to 16. This creates a mismatch where the stored length is far smaller than the actual data buffer. The author advises using -Werror=conversion to make such narrowing warnings fatal and to implement explicit size checks before storage.