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Author

anonymous

25 days ago

Language

C

Compiler

gcc 13.2.0

Options

Warnings

C99

no pedantic

Author

anonymous

25 days ago

yc_countof.h

$ gcc prog.c -Wall -Wextra -std=c99

In file included from prog.c:1:
prog.c: In function 'main':
yc_countof.h:9:28: error: static assertion failed: "yc_countof(): argument must be an array object, not a pointer"
    9 | #  define YC_STATIC_ASSERT _Static_assert
      |                            ^~~~~~~~~~~~~~
yc_countof.h:21:26: note: in expansion of macro 'YC_STATIC_ASSERT'
   21 |     (0 * sizeof(struct { YC_STATIC_ASSERT((cond), msg); char _yc_static_assert_zero; }))
      |                          ^~~~~~~~~~~~~~~~
yc_countof.h:35:6: note: in expansion of macro 'YC_STATIC_ASSERT_ZERO'
   35 |     (YC_STATIC_ASSERT_ZERO(!YC_IS_POINTER_OBJECT(a),               \
      |      ^~~~~~~~~~~~~~~~~~~~~
prog.c:10:16: note: in expansion of macro 'yc_countof'
   10 |     enum { M = yc_countof(p) }; // ちゃんとコンパイルエラー
      |                ^~~~~~~~~~
yc_countof.h:37:16: warning: division 'sizeof (int *) / sizeof (int)' does not compute the number of array elements [-Wsizeof-pointer-div]
   37 |      sizeof(a) / sizeof((a)[0]))
      |                ^
prog.c:10:16: note: in expansion of macro 'yc_countof'
   10 |     enum { M = yc_countof(p) }; // ちゃんとコンパイルエラー
      |                ^~~~~~~~~~
prog.c:9:10: note: first 'sizeof' operand was declared here
    9 |     int *p = ar;
      |          ^

Exit Code:

1