Portability and migration
#pragma options(upconv) (C only), #pragma options(noupconv) (C only)
Specifies whether the unsigned specification is preserved when integral promotions are performed.
NOUPCONV
The UPCONV option causes the z/OS XL C compiler to follow unsignedness preserving rules when doing C type conversions; that is, when widening all integral types (char, short, int, long). Use this option when compiling older C programs that depend on the K&R C conversion rules.
Whenever you specify the UPCONV compiler option, a comment noting its use will be generated in your object module to aid you in diagnosing your program.
None.