_EDC_EOVERFLOW

Sets the behavior of the ftell(), fseek(), fstat(), lstat(), stat(), and mmap() functions. By default these functions will not check for the EOVERFLOW error condition. Setting _EDC_EOVERFLOW to YES enables testing for this condition, and, if overflow is detected, setting errno to EOVERFLOW and returning an error. The _EDC_EOVERFLOW environment variable can be set with the function:
 setenv("_EDC_EOVERFLOW,"YES", 1);
Value
Description
YES
Check for EOVERFLOW error conditions.
<other>
Ignore setting of EOVERFLOW; this is the default. Equivalent to unsetting the environment variable.