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byacc: Disable backtracking extension.

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When updating byacc to 20230201, I enabled the backtracking extension as it seemed useful and harmless.  With a little more experience, it appears to have more impact than I initially thought and I'm no longer sure how useful it really is, so turn it back off.

PR:		244149, 269425
Sponsored by:	Klara, Inc.
Reviewed by:	imp, jkim
Differential Revision:	https://reviews.freebsd.org/D38931
This commit is contained in:
Dag-Erling Smørgrav 2023-03-07 16:04:24 +00:00 committed by Oscar Zhao
parent ca951d2eb5
commit a0c71b5c87
1 changed files with 1 additions and 1 deletions
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usr.bin/yacc/config.h
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@ -105,7 +105,7 @@
/* #undef USE_VALGRIND */
/* Define to 1 to enable backtracking extension */
#define YYBTYACC 1
/* #undef YYBTYACC */
/* Define to 1 if you want to perform memory-leak testing. */
/* #undef YY_NO_LEAKS */