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fix lvalue context for 4-arg substr
authorZefram <zefram@fysh.org>
Thu, 16 Nov 2017 14:56:11 +0000 (14:56 +0000)
committerZefram <zefram@fysh.org>
Thu, 16 Nov 2017 14:59:22 +0000 (14:59 +0000)
commit19a8de486236b6004a51aa6c16eb9fcde47d86d1
tree8c7908914c9d3edb04c917249e72c34d152cdfa5
parenta2ed475b03b6a44991249033e2fa7dc3818d361b
fix lvalue context for 4-arg substr

4-arg substr uses its first arg as an lvalue, but wasn't lvaluifying
it properly.  [perl #115258]
op.c
t/op/substr.t