https://bugs.exim.org/show_bug.cgi?id=1801
Bug ID: 1801
Summary: Test #18 fails
Product: PCRE
Version: 10.21 (PCRE2)
Hardware: x86
OS: Windows
Status: NEW
Severity: bug
Priority: medium
Component: Code
Assignee: ph10@???
Reporter: Roy.Ivy.III@???
CC: pcre-dev@???
I recently updated and compiled the most recent commit of PCRE2
(svn://vcs.exim.org/pcre2/code/trunk@493).
When compiled under Windows/MinGW, test #18 fails (only for the 8-bit library;
16-bit and 32-bit are purposefully skipped).
The relevant mismatch in "testout8\testoutput18" is:
```
...
/abcd/substitute_extended
** Ignored with POSIX interface: substitute_extended
/\[A]{1000000}**/expand,regerror_buffsize=31
Failed: POSIX code 4: ? * + invalid at offset 1000001DEADBEEFAAAAAAAAAAA ...
(~1 million repeats)
** regerror() message truncated
/\[A]{1000000}**/expand,regerror_buffsize=32
Failed: POSIX code 4: ? * + invalid at offset 1000001
# End of testdata/testinput18
```
vs the expected (snipped):
```
...
/abcd/substitute_extended
** Ignored with POSIX interface: substitute_extended
/\[A]{1000000}**/expand,regerror_buffsize=31
Failed: POSIX code 4: ? * + invalid at offset 100000
** regerror() message truncated
/\[A]{1000000}**/expand,regerror_buffsize=32
Failed: POSIX code 4: ? * + invalid at offset 1000001
# End of testdata/testinput18
```
It looks like it might be a buffer overflow error.
I looked back into the SVN history and the bug is introduced in commit
svn://vcs.exim.org/pcre2/code/trunk@399, apparently present at the introduction
of the test. Unfortunately, I don't know the code well enough to narrow it down
further.
All other tests (8-bit, 16-bit, and 32-bit libraries, using both 32-bit and
64-bit compilers) are passing, except for the locale-specific tests (which I
expect to fail).
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