Alessandro Bonazzi
e075990ed3
Files correlati : Commento : Aggiunto il preprocessore c++ mcpp per sostituire il compilatore nella compilazione delle maschere.
34 lines
924 B
C
34 lines
924 B
C
/* n_13_7.c: Short-circuit evaluation of #if expression. */
|
|
|
|
/* 13.7: 10/0 or 10/MACRO_0 are never evaluated, "divide by zero" error
|
|
cannot occur. */
|
|
#define MACRO_0 0
|
|
|
|
/* Valid block */
|
|
#if 0 && 10 / 0
|
|
Block to be skipped
|
|
#endif
|
|
#if not_defined && 10 / not_defined
|
|
Block to be skipped
|
|
#endif
|
|
#if MACRO_0 && 10 / MACRO_0 > 1
|
|
Block to be skipped
|
|
#endif
|
|
#if MACRO_0 ? 10 / MACRO_0 : 0
|
|
Block to be skipped
|
|
#endif
|
|
#if MACRO_0 == 0 || 10 / MACRO_0 > 1
|
|
Valid block
|
|
#else
|
|
Block to be skipped
|
|
#endif
|
|
|
|
/* { dg-do preprocess }
|
|
{ dg-options "-ansi -w" }
|
|
{ dg-final { if ![file exist n_13_7.i] { return } } }
|
|
{ dg-final { if \{ [grep n_13_7.i "Valid block"] != "" \} \{ } }
|
|
{ dg-final { return \} } }
|
|
{ dg-final { fail "n_13_7.c: short-circuit evaluation of #if expression" } }
|
|
*/
|
|
|