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| author | Björn Gustavsson <[email protected]> | 2018-02-09 10:27:38 +0100 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2018-02-09 11:54:18 +0100 |
| commit | 73ff9fa2126d96e5b30d01abd6c4560407f295e4 (patch) | |
| tree | 030a07de85528f5f7450115490bec59363846d3e /lib/compiler/src/beam_a.erl | |
| parent | 9be186620d86b60791f20ddf5d051c63d576e737 (diff) | |
| download | otp-73ff9fa2126d96e5b30d01abd6c4560407f295e4.tar.gz otp-73ff9fa2126d96e5b30d01abd6c4560407f295e4.tar.bz2 otp-73ff9fa2126d96e5b30d01abd6c4560407f295e4.zip | |
Check that the stack is initialized when an exception may occur
Strengthen beam_validator to check that the stack is initialized
when an instruction with an {f,0} operand is executed.
For example, the following code sequence:
{allocate,0,1}.
{bif,element,{f,0},[{integer,1},{x,0}],{x,0}}.
should not be accepted because the stack may be scanned if
element/2 fails. That could cause a crash or other undefined
behavior if garbage on the stack looks like a catch tag.
Diffstat (limited to 'lib/compiler/src/beam_a.erl')
0 files changed, 0 insertions, 0 deletions