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authorHerbert Xu <herbert@gondor.apana.org.au>2014-10-02 08:26:06 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2014-10-02 08:26:06 +0800
commit6c3f73bc536082fec38bd36e6c8a121033c68835 (patch)
tree8b1676ccf4edfd5b5b191fc9b248fbebfad131f8 /src/funcs/newgrp
parent[PARSER] Add nlprompt/nlnoprompt helpers (diff)
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[EVAL] Fix use-after-free in dotrap/evalstring
The function dotrap calls evalstring using the stored trap string.
If evalstring then unsets that exact trap string then we will end
up using freed memory.

This patch fixes it by making evalstring always duplicate the string
before using it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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