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| author | Kaz Kylheku <kaz@kylheku.com> | 2019-10-17 07:54:24 -0700 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2019-10-17 07:54:24 -0700 |
| commit | e61bfc41ed9d522b8f679e758fe79f20b326b76b (patch) | |
| tree | 187f81f89351609fb940056b858d8424c0e35ad9 /match.h | |
| parent | 24f59dc6fd38aeba9a10099c8b7a1243b18392a3 (diff) | |
| download | txr-e61bfc41ed9d522b8f679e758fe79f20b326b76b.tar.gz txr-e61bfc41ed9d522b8f679e758fe79f20b326b76b.tar.bz2 txr-e61bfc41ed9d522b8f679e758fe79f20b326b76b.zip | |
vm: prevent overflow of fixparam field in function.
Functions can only have 127 fixed parameters; some code
ignores this when assigning to the bitfield.
* lib.h (FIXPARAM_BITS, FIXPARAM_MAX): New preprocessor
symbols.
(struct func): Use FIXPARAM_BITS for defining fixparam and
optargs bitfields instead of hard-coded 7.
* lib.c (func_vm): Sanity check the fixparam and reqags
parameters: 0 <= reqargs <= fixparam <= FIXPARAM_MAX.
Diffstat (limited to 'match.h')
0 files changed, 0 insertions, 0 deletions