diag: Get rid of bfs_static_assert()

In most cases, it's not too annoying to specify a message.  For
tests/bit.c, we can manually polyfill the 1-argument version.

3 files changed, 2 insertions, 13 deletions

diff --git a/src/diag.h b/src/diag.h
index d70bd43..a8e5a5c 100644
--- a/src/diag.h
+++ b/src/diag.h
@@ -13,16 +13,6 @@
 #include <stdarg.h>
 
 /**
- * static_assert() with an optional second argument.
- */
-#if __STDC_VERSION__ >= C23
-#  define bfs_static_assert static_assert
-#else
-#  define bfs_static_assert(...) bfs_static_assert_(__VA_ARGS__, #__VA_ARGS__, )
-#  define bfs_static_assert_(expr, msg, ...) _Static_assert(expr, msg)
-#endif
-
-/**
  * A source code location.
  */
 struct bfs_loc {
diff --git a/src/ioq.c b/src/ioq.c
index 50898c6..603163d 100644
--- a/src/ioq.c
+++ b/src/ioq.c
@@ -180,8 +180,7 @@ typedef atomic uintptr_t ioq_slot;
 /** Amount to add for an additional skip. */
 #define IOQ_SKIP_ONE (~IOQ_BLOCKED)
 
-// Need room for two flag bits
-bfs_static_assert(alignof(struct ioq_ent) >= (1 << 2));
+static_assert(alignof(struct ioq_ent) >= (1 << 2), "struct ioq_ent is underaligned");
 
 /**
  * An MPMC queue of I/O commands.
diff --git a/src/trie.c b/src/trie.c
index e1c9f26..1c4ac77 100644
--- a/src/trie.c
+++ b/src/trie.c
@@ -90,7 +90,7 @@
 #include <stdint.h>
 #include <string.h>
 
-bfs_static_assert(CHAR_WIDTH == 8);
+static_assert(CHAR_WIDTH == 8, "This trie implementation assumes 8-bit bytes.");
 
 #if __i386__ || __x86_64__
 #  define _trie_clones _target_clones("popcnt", "default")