diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/cpp/macsyntx.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/cpp/macsyntx.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/cpp/macsyntx.c b/gcc-4.9/gcc/testsuite/gcc.dg/cpp/macsyntx.c new file mode 100644 index 000000000..495921efa --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/cpp/macsyntx.c @@ -0,0 +1,72 @@ +/* Copyright (C) 2000 Free Software Foundation, Inc. */ + +/* { dg-do preprocess } */ +/* { dg-options "-pedantic -std=gnu99" } */ + +/* Tests macro syntax, for both definition and invocation, including:- + + o Full range of macro definition semantics. + o No. of arguments supplied to function-like macros. + o Odd GNU rest args behavior. + o Macro arguments do not flow into the rest of the file. */ + + +/* Test basic macro definition syntax. The macros are all called + "foo" deliberately to provoke an (excess) redefinition warning in + case the macros succeed in being entered in the macro hash table + despite being an error. + + Split a couple of the lines to check that the errors appear on the + right line (i.e. are associated with the correct token). */ + +#define ; /* { dg-error "identifier" } */ +#define SEMI; /* { dg-warning "space" } */ +#define foo(X /* { dg-error "missing" } */ +#define foo\ +(X,) /* { dg-error "parameter name" } */ +#define foo(, X) /* { dg-error "parameter name" } */ +#define foo(X, X) /* { dg-error "duplicate" } */ +#define foo(X Y) /* { dg-error "comma" } */ +#define foo(() /* { dg-error "may not appear" } */ +#define foo(..., X) /* { dg-error "missing" } */ +#define foo \ +__VA_ARGS__ /* { dg-warning "__VA_ARGS__" } */ +#define goo(__VA_ARGS__) /* { dg-warning "__VA_ARGS__" } */ +#define hoo(...) __VA_ARGS__ /* OK. */ +#define __VA_ARGS__ /* { dg-warning "__VA_ARGS__" } */ +__VA_ARGS__ /* { dg-warning "__VA_ARGS__" } */ + +/* test # of supplied arguments. */ +#define none() +#define one(x) +#define two(x, y) +#define var0(...) +#define var1(x, ...) +none() /* OK. */ +none(ichi) /* { dg-error "passed 1" } */ +one() /* OK. */ +one(ichi) /* OK. */ +one(ichi\ +, ni) /* { dg-error "passed 2" } */ +two(ichi) /* { dg-error "requires 2" } */ +var0() /* OK. */ +var0(ichi) /* OK. */ +var1() /* { dg-warning "rest arguments to be used" } */ +var1(ichi) /* { dg-warning "rest arguments to be used" } */ +var1(ichi, ni) /* OK. */ + +/* This tests two oddities of GNU rest args - omitting a comma is OK, + and backtracking a token on pasting an empty rest args. */ +#define rest(x, y...) x ## y /* { dg-warning "ISO C" } */ +rest(ichi,) /* OK. */ +rest(ichi) /* { dg-warning "rest arguments to be used" } */ +#if 23 != rest(2, 3) /* OK, no warning. */ +#error 23 != 23 !! +#endif + +/* Test that we don't allow arguments to flow into the rest of the + file. */ +#define half_invocation do_nowt(2 +#define do_nowt(x) x +half_invocation ) /* OK. */ +do_nowt (half_invocation)) /* { dg-error "unterminated argument" } */ |