add UNREACHABLE_RETURN

Not every compilers understand that rb_raise does not return.  When a
function does not end with a return statement, such compilers can issue
warnings.  We would better tell them about reachabilities.

1 files changed, 2 insertions, 0 deletions

diff --git a/string.c b/string.c
index 903222e0e4..8bcc6bb9c8 100644
--- a/string.c
+++ b/string.c
@@ -3015,6 +3015,7 @@ rb_enc_cr_str_buf_cat(VALUE str, const char *ptr, long len,
   incompatible:
     rb_raise(rb_eEncCompatError, "incompatible character encodings: %s and %s",
              rb_enc_name(str_enc), rb_enc_name(ptr_enc));
+    UNREACHABLE_RETURN(Qundef);
 }
 
 VALUE
@@ -9679,6 +9680,7 @@ rb_str_crypt(VALUE str, VALUE salt)
 
   short_salt:
     rb_raise(rb_eArgError, "salt too short (need >=2 bytes)");
+    UNREACHABLE_RETURN(Qundef);
 }