[asterisk-dev] [Code Review] 3083: funcs: REPLACE() can call strcpy on overlapping memory

[Scott Griepentrog]

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Review request for Asterisk Developers.


Bugs: ASTERISK-22910
    https://issues.asterisk.org/jira/browse/ASTERISK-22910


Repository: Asterisk


Description
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Patch by: Gareth Palmer

When calling REPLACE() with an empty replace-char argument; strcpy is used to overwrite the the matching <find-char>.

However as the src and dest argument to strcpy must not overlap it causes other parts of the string to be overwritten with adjacent characters and the result is mangled.

Patch replaces call to strcpy with memmove and adds a test suite case for REPLACE.


Diffs
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  /branches/1.8/funcs/func_strings.c 404386 

Diff: https://reviewboard.asterisk.org/r/3083/diff/


Testing
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Thanks,

Scott Griepentrog

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