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handling. The problem was that parsing of nested regular expression involved recursive calls. Such recursion didn't take into account the amount of available stack space, which ended up leading to stack overflow crashes. mysql-test/t/not_embedded_server.test: Added test for bug#58026. regex/my_regex.h: added pointer to function as last argument of my_regex_init() for check enough memory in stack. regex/regcomp.c: p_ere() was modified: added call to function for check enough memory in stack. Function for check available stack space specified by global variable my_regex_enough_mem_in_stack. This variable set to NULL for embedded mysqld and to a pointer to function check_enough_stack_size otherwise. regex/reginit.c: my_regex_init was modified: pass a pointer to a function for check enough memory in stack space. Reset this pointer to NULL in my_regex_end. sql/mysqld.cc: Added function check_enough_stack_size() for check enough memory in stack. Passed this function as second argument to my_regex_init. For embedded mysqld passed NULL as second argument. |
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|---|---|---|
| .. | ||
| .cvsignore | ||
| cclass.h | ||
| CHANGES | ||
| CMakeLists.txt | ||
| cname.h | ||
| COPYRIGHT | ||
| debug.c | ||
| debug.ih | ||
| engine.c | ||
| engine.ih | ||
| main.c | ||
| main.ih | ||
| make-ccc | ||
| Makefile.am | ||
| my_regex.h | ||
| README | ||
| regcomp.c | ||
| regcomp.ih | ||
| regerror.c | ||
| regerror.ih | ||
| regex.3 | ||
| regex.7 | ||
| regex2.h | ||
| regexec.c | ||
| regexp.c | ||
| regfree.c | ||
| reginit.c | ||
| split.c | ||
| tests | ||
| utils.h | ||
| WHATSNEW | ||
alpha3.4 release.
Thu Mar 17 23:17:18 EST 1994
henry@zoo.toronto.edu
See WHATSNEW for change listing.
installation notes:
--------
Read the comments at the beginning of Makefile before running.
Utils.h contains some things that just might have to be modified on
some systems, as well as a nested include (ugh) of <assert.h>.
The "fake" directory contains quick-and-dirty fakes for some header
files and routines that old systems may not have. Note also that
-DUSEBCOPY will make utils.h substitute bcopy() for memmove().
After that, "make r" will build regcomp.o, regexec.o, regfree.o,
and regerror.o (the actual routines), bundle them together into a test
program, and run regression tests on them. No output is good output.
"make lib" builds just the .o files for the actual routines (when
you're happy with testing and have adjusted CFLAGS for production),
and puts them together into libregex.a. You can pick up either the
library or *.o ("make lib" makes sure there are no other .o files left
around to confuse things).
Main.c, debug.c, split.c are used for regression testing but are not part
of the RE routines themselves.
Regex.h goes in /usr/include. All other .h files are internal only.
--------