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Fix memory leaks in scanners generated by at least Flex 2.5.9 and

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later.  Reported by Paul Eggert in
<http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00014.html>.
* src/flex-scanner.h (yylex_destroy): Define for Flex before 2.5.9.
* src/scan-code.l (translate_action): Don't bother invoking
yy_delete_buffer (YY_CURRENT_BUFFER) before creating the first buffer.
(code_scanner_free): Instead of invoking
yy_delete_buffer (YY_CURRENT_BUFFER) directly, invoke yylex_destroy,
which frees more.
* src/scan-gram.l (gram_scanner_free): Likewise.
* src/scan-skel.l (scan_skel): Likewise.
This commit is contained in:
Joel E. Denny
2006-11-10 05:26:26 +00:00
parent 4502eadc2f
commit 580b892607
5 changed files with 30 additions and 5 deletions
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@@ -1,3 +1,17 @@
2006-11-10 Joel E. Denny <jdenny@ces.clemson.edu>
Fix memory leaks in scanners generated by at least Flex 2.5.9 and
later. Reported by Paul Eggert in
<http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00014.html>.
* src/flex-scanner.h (yylex_destroy): Define for Flex before 2.5.9.
* src/scan-code.l (translate_action): Don't bother invoking
yy_delete_buffer (YY_CURRENT_BUFFER) before creating the first buffer.
(code_scanner_free): Instead of invoking
yy_delete_buffer (YY_CURRENT_BUFFER) directly, invoke yylex_destroy,
which frees more.
* src/scan-gram.l (gram_scanner_free): Likewise.
* src/scan-skel.l (scan_skel): Likewise.
2006-11-09 Joel E. Denny <jdenny@ces.clemson.edu>
* src/files.c (tr): Change return type to void.