merge revision(s) 3a3033c138c0951ad5edbf02b5c233b58a190d2f: [Backport #17787]

	get rid of using `__builtin_unreachable` directly [Bug #17787]

	As it is an independent feature from `clz`, `ctz` and `popcount`,
	it might be unavailable even if the latters are built in.
	---
	 internal/bits.h | 6 +++---
	 1 file changed, 3 insertions(+), 3 deletions(-)

2 files changed, 4 insertions, 4 deletions

diff --git a/internal/bits.h b/internal/bits.h
index a7ddcaeb78..746947bfc2 100644
--- a/internal/bits.h
+++ b/internal/bits.h
@@ -284,7 +284,7 @@ nlz_int64(uint64_t x)
     }
     else {
         /* :FIXME: Is there a way to make this branch a compile-time error? */
-        __builtin_unreachable();
+        UNREACHABLE_RETURN(~0);
     }
 
 #else
@@ -419,7 +419,7 @@ rb_popcount64(uint64_t x)
     }
     else {
         /* :FIXME: Is there a way to make this branch a compile-time error? */
-        __builtin_unreachable();
+        UNREACHABLE_RETURN(~0);
     }
 
 #else
@@ -492,7 +492,7 @@ ntz_int64(uint64_t x)
     }
     else {
         /* :FIXME: Is there a way to make this branch a compile-time error? */
-        __builtin_unreachable();
+        UNREACHABLE_RETURN(~0);
     }
 
 #else
diff --git a/version.h b/version.h
index 9a0663c459..127db88ac4 100644
--- a/version.h
+++ b/version.h
@@ -12,7 +12,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 2
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 74
+#define RUBY_PATCHLEVEL 75
 
 #define RUBY_RELEASE_YEAR 2021
 #define RUBY_RELEASE_MONTH 4