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/* n_10.c: #if, #elif, #else and #endif pp-directive. */
#define MACRO_0 0
#define MACRO_1 1
/* 10.1: */
/* Note: an undefined identifier in #if expression is replaced to 0. */
/* 1; */
#if a
a;
#elif MACRO_0
MACRO_0;
#elif MACRO_1 /* Valid block */
MACRO_1;
#else
0;
#endif
/* 10.2: Comments must be processed even if in skipped #if block. */
/* At least tokenization of string literal and character constant is necessary
to process comments, e.g. /* is not a comment mark in string literal.
*/
#ifdef UNDEFINED
/* Comment */
"in literal /* is not a comment"
#endif /* No excess-errors */
/* { dg-do preprocess }
{ dg-options "-ansi -w" }
{ dg-final { if ![file exist n_10.i] { return } } }
{ dg-final { if \{ [grep n_10.i "1" ] != "" \} \{ } }
{ dg-final { return \} } }
{ dg-final { fail "n_10.c: #if, #elif, #else and #endif" } }
*/
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