Make `mrb_static_assert()` a variable argument

`mrb_static_assert()` extends the macro function to take one or two arguments.
If the argument is other than that, an error will occur.

References:
- static_assert のメッセージ省略を許可 - cpprefjp C++日本語リファレンス
  https://cpprefjp.github.io/lang/cpp17/extending_static_assert.html
- c - Overloading Macro on Number of Arguments - Stack Overflow
  https://stackoverflow.com/a/11763277

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gc.c b/src/gc.c
index fce2c3150..a6ff0c588 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -200,7 +200,7 @@ gettimeofday_time(void)
 #define GC_RED MRB_GC_RED
 #define GC_WHITES (GC_WHITE_A | GC_WHITE_B)
 #define GC_COLOR_MASK 7
-mrb_static_assert1(MRB_GC_RED <= GC_COLOR_MASK);
+mrb_static_assert(MRB_GC_RED <= GC_COLOR_MASK);
 
 #define paint_gray(o) ((o)->color = GC_GRAY)
 #define paint_black(o) ((o)->color = GC_BLACK)