-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [adding autoconf to cc] According to Santiago Vila on 9/3/2006 6:55 AM: > Andreas Schultz <aschultz@xxxxxxxxxx> writes: > > m4 crashes with "m4: INTERNAL ERROR: recursive push_string" > > Later, he adds: > > It seems that the problem is reproducible with every automake project > that has a) AC_OUTPUT on the last line in configure.ac and b) no > terminating newline on that line. Adding a newline will make the > problem disappear. > > and in fact, I can reproduce it using GNU hello 2.1.1 by removing the > last two lines of configure.ac, removing also the newline from the > AC_OUTPUT final line, and then trying "./configure; make configure". > > This is with m4 1.4.6, and it did not happen with m4 1.4.4. Thanks for a useful bug report. I will spend time narrowing down what is causing this regression, and hope to get m4 1.4.7 out within a month, after I see if any other bugs are reported. But be advised that POSIX only requires m4 to process text files, and a file that does not end in a newline is not a text file (unless it is empty), so the bug is only triggered when you are violating POSIX. On the other hand, as a quality of implementation issue, I totally agree that this is not good practice for GNU software. In the meantime, perhaps Autoconf should document that all autom4te input files should always end in newline. - -- Life is short - so eat dessert first! Eric Blake ebb9@xxxxxxx -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.1 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFE+1E984KuGfSFAYARAjmlAJ980j+ambJto90B3RnoB9CV+iJHegCeMUe3 xWN7CPNWpNOqWrL2RP4ALDE= =OhEb -----END PGP SIGNATURE----- _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
