On Haiku (32-bit), compiling m4-1.4.18b+fixes works fine, but one of the tests fails: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Checking ../../checks/198.sysval @ ../doc/m4.texi:6749: Origin of test ../../checks/198.sysval: stdout mismatch --- m4-tmp.10743/m4-xout 2021-05-10 01:15:42.526647296 +0000 +++ m4-tmp.10743/m4-out 2021-05-10 01:15:42.504102912 +0000 @@ -1,6 +1,6 @@ -2304 +5376 0 -2304 +5376 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
2304 is 0x0900, whereas 5376 is 0x1500. On this platform, the signal number 0x09 is SIGKILL, and the signal number 0x15 is SIGKILLTHR. I can reproduce it also in the shell: When you kill a process with signal 9, bash reports not "Killed" but "Kill Thread", and 'echo $?' prints not 137 but 149. Bruno
