[Fix] Use unsigned char for ragel machines

It seems that on aarch64 Linux char is signed by default, so Ragel produces
a wrong code that is "optimized" by a compiler simply to `false`.

Issue: #5172

diff --git a/src/ragel/smtp_base.rl b/src/ragel/smtp_base.rl
index eefc430d5b67879c835dee2457cac22117c88f94..952c3a5c3d1080f8ef696a62df40856d8cdfc505 100644 (file)
--- a/src/ragel/smtp_base.rl
+++ b/src/ragel/smtp_base.rl
@@ -1,5 +1,6 @@
 %%{
   machine smtp_base;
+  alphtype unsigned char;
 
   # Base SMTP definitions
   # Dependencies: none