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revision 79 by nigel, Sat Feb 24 21:40:52 2007 UTC revision 83 by nigel, Sat Feb 24 21:41:06 2007 UTC
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1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4    Version 6.3 15-Aug-05
5    ---------------------
6    
7     1. The file libpcre.pc.in did not have general read permission in the tarball.
8    
9     2. There were some problems when building without C++ support:
10    
11        (a) If C++ support was not built, "make install" and "make test" still
12            tried to test it.
13    
14        (b) There were problems when the value of CXX was explicitly set. Some
15            changes have been made to try to fix these, and ...
16    
17        (c) --disable-cpp can now be used to explicitly disable C++ support.
18    
19        (d) The use of @CPP_OBJ@ directly caused a blank line preceded by a
20            backslash in a target when C++ was disabled. This confuses some
21            versions of "make", apparently. Using an intermediate variable solves
22            this. (Same for CPP_LOBJ.)
23    
24     3. $(LINK_FOR_BUILD) now includes $(CFLAGS_FOR_BUILD) and $(LINK)
25        (non-Windows) now includes $(CFLAGS) because these flags are sometimes
26        necessary on certain architectures.
27    
28     4. Added a setting of -export-symbols-regex to the link command to remove
29        those symbols that are exported in the C sense, but actually are local
30        within the library, and not documented. Their names all begin with
31        "_pcre_". This is not a perfect job, because (a) we have to except some
32        symbols that pcretest ("illegally") uses, and (b) the facility isn't always
33        available (and never for static libraries). I have made a note to try to
34        find a way round (a) in the future.
35    
36    
37    Version 6.2 01-Aug-05
38    ---------------------
39    
40     1. There was no test for integer overflow of quantifier values. A construction
41        such as {1111111111111111} would give undefined results. What is worse, if
42        a minimum quantifier for a parenthesized subpattern overflowed and became
43        negative, the calculation of the memory size went wrong. This could have
44        led to memory overwriting.
45    
46     2. Building PCRE using VPATH was broken. Hopefully it is now fixed.
47    
48     3. Added "b" to the 2nd argument of fopen() in dftables.c, for non-Unix-like
49        operating environments where this matters.
50    
51     4. Applied Giuseppe Maxia's patch to add additional features for controlling
52        PCRE options from within the C++ wrapper.
53    
54     5. Named capturing subpatterns were not being correctly counted when a pattern
55        was compiled. This caused two problems: (a) If there were more than 100
56        such subpatterns, the calculation of the memory needed for the whole
57        compiled pattern went wrong, leading to an overflow error. (b) Numerical
58        back references of the form \12, where the number was greater than 9, were
59        not recognized as back references, even though there were sufficient
60        previous subpatterns.
61    
62     6. Two minor patches to pcrecpp.cc in order to allow it to compile on older
63        versions of gcc, e.g. 2.95.4.
64    
65    
66  Version 6.1 21-Jun-05  Version 6.1 21-Jun-05
67  ---------------------  ---------------------
68    

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