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Fix tuple assignments with multi-slot components.

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This commit is contained in:
a3d4
2020-04-07 18:39:25 +02:00
committed by Daniel Kirchner
parent 823a119117
commit aba0b2957c
7 changed files with 108 additions and 3 deletions
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docs/bugs.json
+8
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@@ -1,4 +1,12 @@
[
{
"name": "TupleAssignmentMultiStackSlotComponents",
"summary": "Tuple assignments with components that occupy several stack slots, i.e. nested tuples, pointers to external functions or references to dynamically sized calldata arrays, can result in invalid values.",
"description": "Tuple assignments did not correctly account for tuple components that occupy multiple stack slots in case the number of stack slots differs between left-hand-side and right-hand-side. This can either happen in the presence of nested tuples or if the right-hand-side contains external function pointers or references to dynamic calldata arrays, while the left-hand-side contains an omission.",
"introduced": "0.1.6",
"fixed": "0.6.6",
"severity": "very low"
},
{
"name": "MemoryArrayCreationOverflow",
"summary": "The creation of very large memory arrays can result in overlapping memory regions and thus memory corruption.",