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From fecd3be8dbdb747b9cbf4cbb9299ce40faabc8e6 Mon Sep 17 00:00:00 2001
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From: John Lightsey <lightsey@debian.org>
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Date: Mon, 14 Nov 2016 11:56:15 +0100
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Subject: [PATCH] Fix Storable segfaults.
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Fix a null pointed dereference segfault in storable when the
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retrieve_code logic was unable to read the string that contained
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the code.
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Also fix several locations where retrieve_other was called with a
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null context pointer. This also resulted in a null pointer
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dereference.
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---
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dist/Storable/Storable.xs | 10 +++++++---
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1 file changed, 7 insertions(+), 3 deletions(-)
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diff --git a/dist/Storable/Storable.xs b/dist/Storable/Storable.xs
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index 053951c..caa489c 100644
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--- a/dist/Storable/Storable.xs
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+++ b/dist/Storable/Storable.xs
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@@ -5647,6 +5647,10 @@ static SV *retrieve_code(pTHX_ stcxt_t *cxt, const char *cname)
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CROAK(("Unexpected type %d in retrieve_code\n", type));
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}
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+ if (!text) {
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+ CROAK(("Unable to retrieve code\n"));
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+ }
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+
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/*
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* prepend "sub " to the source
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*/
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@@ -5767,7 +5771,7 @@ static SV *old_retrieve_array(pTHX_ stcxt_t *cxt, const char *cname)
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continue; /* av_extend() already filled us with undef */
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}
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if (c != SX_ITEM)
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- (void) retrieve_other(aTHX_ (stcxt_t *) 0, 0); /* Will croak out */
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+ (void) retrieve_other(aTHX_ cxt, 0); /* Will croak out */
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TRACEME(("(#%d) item", i));
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sv = retrieve(aTHX_ cxt, 0); /* Retrieve item */
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if (!sv)
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@@ -5844,7 +5848,7 @@ static SV *old_retrieve_hash(pTHX_ stcxt_t *cxt, const char *cname)
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if (!sv)
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return (SV *) 0;
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} else
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- (void) retrieve_other(aTHX_ (stcxt_t *) 0, 0); /* Will croak out */
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+ (void) retrieve_other(aTHX_ cxt, 0); /* Will croak out */
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/*
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* Get key.
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@@ -5855,7 +5859,7 @@ static SV *old_retrieve_hash(pTHX_ stcxt_t *cxt, const char *cname)
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GETMARK(c);
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if (c != SX_KEY)
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- (void) retrieve_other(aTHX_ (stcxt_t *) 0, 0); /* Will croak out */
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+ (void) retrieve_other(aTHX_ cxt, 0); /* Will croak out */
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RLEN(size); /* Get key size */
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KBUFCHK((STRLEN)size); /* Grow hash key read pool if needed */
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if (size)
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--
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2.10.2
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