[Pspp-commits] [SCM] GNU PSPP branch, master, updated. v1.4.1-503-gbc0434f

[Ben Pfaff]

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commit bc0434f1ced83fc3a5f5ace44cbad3acdc5e3e29
Author: Ben Pfaff <blp@cs.stanford.edu>
Date:   Tue Oct 5 22:15:28 2021 -0700

    expressions: Parse multiple sets of parentheses for grouping together.
    
    Fuzzers are fond of driving expression parsers to failure by exhausting
    the stack in trivial ways.  This defeats the simplest attempts by
    lining up thousands of left parentheses in a row.
    
    I am a bit curious whether the fuzzer will now invent something more
    sophisticated, such as nested function calls or non-empty expressions like
    1+(1+(1+(1+(1+....
    
    This fixes bug #61286.
    Thanks to Irfan Ariq for reporting the bug.

-----------------------------------------------------------------------

Summary of changes:
 src/language/expressions/parse.c | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)


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