Hi,
Easy to reproduce:
$ cd workingcopy
$ svn diff . --internal-diff
If you pass --internal-diff, then svn_config_set() is called with NULL
as the value to remove it.
However when doing the diff, config.c, make_string_from_option later
uses that NULL value:
if (strchr(opt->value, '%'))
opt-value here is NULL, and therefore strchr crashes.
I suggest changing that line to
if (opt->value && strchr(opt->value, '%'))
Stefan
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