llvm-capstone/clang/test/Preprocessor/macro_fn.c
Richard Trieu 79b45389c3 Add new diagnostic messages when too many arguments are presented to a
function-like macro.  Clang will attempt to correct the arguments by detecting
braced initializer lists:

1) If possible, suggest parentheses around arguments
containing braced lists which will give the proper number of arguments.
2) If a braced list is detected at the start of a macro argument, it cannot be
corrected by parentheses.  Instead, just point out the location of these
braced lists.

llvm-svn: 186971
2013-07-23 18:01:49 +00:00

54 lines
2.6 KiB
C

/* RUN: %clang_cc1 %s -Eonly -std=c89 -pedantic -verify
*/
/* PR3937 */
#define zero() 0 /* expected-note 2 {{defined here}} */
#define one(x) 0 /* expected-note 2 {{defined here}} */
#define two(x, y) 0 /* expected-note 4 {{defined here}} */
#define zero_dot(...) 0 /* expected-warning {{variadic macros are a C99 feature}} */
#define one_dot(x, ...) 0 /* expected-warning {{variadic macros are a C99 feature}} expected-note 2{{macro 'one_dot' defined here}} */
zero()
zero(1); /* expected-error {{too many arguments provided to function-like macro invocation}} */
zero(1, 2, 3); /* expected-error {{too many arguments provided to function-like macro invocation}} */
one() /* ok */
one(a)
one(a,) /* expected-error {{too many arguments provided to function-like macro invocation}} \
expected-warning {{empty macro arguments are a C99 feature}}*/
one(a, b) /* expected-error {{too many arguments provided to function-like macro invocation}} */
two() /* expected-error {{too few arguments provided to function-like macro invocation}} */
two(a) /* expected-error {{too few arguments provided to function-like macro invocation}} */
two(a,b)
two(a, ) /* expected-warning {{empty macro arguments are a C99 feature}} */
two(a,b,c) /* expected-error {{too many arguments provided to function-like macro invocation}} */
two(
, /* expected-warning {{empty macro arguments are a C99 feature}} */
, /* expected-warning {{empty macro arguments are a C99 feature}} \
expected-error {{too many arguments provided to function-like macro invocation}} */
) /* expected-warning {{empty macro arguments are a C99 feature}} */
two(,) /* expected-warning 2 {{empty macro arguments are a C99 feature}} */
/* PR4006 & rdar://6807000 */
#define e(...) __VA_ARGS__ /* expected-warning {{variadic macros are a C99 feature}} */
e(x)
e()
zero_dot()
one_dot(x) /* empty ... argument: expected-warning {{must specify at least one argument for '...' parameter of variadic macro}} */
one_dot() /* empty first argument, elided ...: expected-warning {{must specify at least one argument for '...' parameter of variadic macro}} */
/* rdar://6816766 - Crash with function-like macro test at end of directive. */
#define E() (i == 0)
#if E
#endif
/* <rdar://problem/12292192> */
#define NSAssert(condition, desc, ...) /* expected-warning {{variadic macros are a C99 feature}} */ \
SomeComplicatedStuff((desc), ##__VA_ARGS__) /* expected-warning {{token pasting of ',' and __VA_ARGS__ is a GNU extension}} */
NSAssert(somecond, somedesc)