NVgf is part of Perl, not ANSI C or POSIX. It is a preprocessor macro that, from context, must expand to a string constant that completes a printf conversion sequence. What does sv_setpvf(keysv, "NVgf: \"%s\"", NVgf) produce? (That might produce an error; I am guessing that sv_setpvf behaves like C sprintf but puts the result into a Perl SV.) From context, that must be a printf conversion character; what do ANSI C and POSIX say that character is supposed to do?

In reply to Re^3: [XS] Weird behaviour on some Linux systems by jcb
in thread [XS] Weird behaviour on some Linux systems by syphilis

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