| Folks,
This is some very old private code (from the mid-80ies, pre ANSI-C) that I try to port to the Mac. The code isn't mine but is supposed to compile under Windows 3.x (!) with MSVisualStudio 4.
I have no clue what the compiler tries to tell me:
auto unsigned long lcl_l_flags = 0;
lcl_l_flags = pgf_setdef_flag_(HYPHEN_PGF, DDIF_M_T_HYPHENATION_ALLOWED, DDIF_M_T_HYPHENATION_ALLOWED);
pgf_setdef_flag is a macro defined as follows:
#define pgf_setdef_flag_(flag,val,def) \ ( (!spgfp) ? lcl_l_flags |= def \ : (spgfp->flags & flag) ? lcl_l_flags |= val \ : 0 \ )
Thus the above code after preprocessing looks like:
lcl_l_flags = ( (!spgfp) ? lcl_l_flags |= 1 : (spgfp->flags & (0x02)) ? lcl_l_flags |= 1 : 0 );
And then the compiler says: warning: operation on 'lcl_l_flags' may be undefined
What does this warning mean? How can I fix it? Is it a problem at all? How can I ignore it? Lots of questions... Btw: spgfp->flags is of type unsigned char.
Confused ---markus---
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