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Version 1.04 19-Dec-97 |
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1. Corrected the man page, where some "const" qualifiers had been omitted. |
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2. Made debugging output print "{0,xxx}" instead of just "{,xxx}" to agree with |
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input syntax. |
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3. Fixed memory leak which occurred when a regex with back references was |
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matched with an offsets vector that wasn't big enough. The temporary memory |
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that is used in this case wasn't being freed if the match failed. |
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4. Tidied pcretest to ensure it frees memory that it gets. |
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5. Temporary memory was being obtained in the case where the passed offsets |
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vector was exactly big enough. |
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6. Corrected definition of offsetof() from change 5 below. |
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7. I had screwed up change 6 below and broken the rules for the use of |
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setjmp(). Now fixed. |
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Version 1.03 18-Dec-97 |
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1. A erroneous regex with a missing opening parenthesis was correctly |
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diagnosed, but PCRE attempted to access brastack[-1], which could cause crashes |
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on some systems. |
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2. Replaced offsetof(real_pcre, code) by offsetof(real_pcre, code[0]) because |
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it was reported that one broken compiler failed on the former because "code" is |
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also an independent variable. |
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3. The erroneous regex a[]b caused an array overrun reference. |
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4. A regex ending with a one-character negative class (e.g. /[^k]$/) did not |
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fail on data ending with that character. (It was going on too far, and checking |
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the next character, typically a binary zero.) This was specific to the |
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optimized code for single-character negative classes. |
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5. Added a contributed patch from the TIN world which does the following: |
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+ Add an undef for memmove, in case the the system defines a macro for it. |
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+ Add a definition of offsetof(), in case there isn't one. (I don't know |
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the reason behind this - offsetof() is part of the ANSI standard - but |
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it does no harm). |
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+ Reduce the ifdef's in pcre.c using macro DPRINTF, thereby eliminating |
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most of the places where whitespace preceded '#'. I have given up and |
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allowed the remaining 2 cases to be at the margin. |
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+ Rename some variables in pcre to eliminate shadowing. This seems very |
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pedantic, but does no harm, of course. |
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6. Moved the call to setjmp() into its own function, to get rid of warnings |
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from gcc -Wall, and avoided calling it at all unless PCRE_EXTRA is used. |
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7. Constructs such as \d{8,} were compiling into the equivalent of |
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\d{8}\d{0,65527} instead of \d{8}\d* which didn't make much difference to the |
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outcome, but in this particular case used more store than had been allocated, |
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which caused the bug to be discovered because it threw up an internal error. |
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8. The debugging code in both pcre and pcretest for outputting the compiled |
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form of a regex was going wrong in the case of back references followed by |
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curly-bracketed repeats. |
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Version 1.02 12-Dec-97 |
Version 1.02 12-Dec-97 |
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Revision Log
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