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| author | Ben Gamari <ben@smart-cactus.org> | 2022-11-22 20:23:19 -0500 |
|---|---|---|
| committer | Matthew Pickering <matthewtpickering@gmail.com> | 2022-12-15 09:52:43 +0000 |
| commit | bb4d238b675e5138d1a6ea46552528136e4142d8 (patch) | |
| tree | 5bbacd35744b146dba5ca0e8f149a72de2769492 | |
| parent | 32497a141fd1415c166451730bb5adc7b16882b3 (diff) | |
| download | haskell-bb4d238b675e5138d1a6ea46552528136e4142d8.tar.gz | |
rts: Ensure that global regs are never passed as fun call args
This is in general unsafe as they may be clobbered if they are mapped to
caller-saved machine registers. See Note [Register parameter passing].
(cherry picked from commit 9372329008143104b0ae5e8e792e957090dfa743)
| -rw-r--r-- | rts/HeapStackCheck.cmm | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/rts/HeapStackCheck.cmm b/rts/HeapStackCheck.cmm index ba89f75522..fd977076ed 100644 --- a/rts/HeapStackCheck.cmm +++ b/rts/HeapStackCheck.cmm @@ -518,7 +518,7 @@ stg_block_takemvar_finally W_ r1, r3; r1 = R1; r3 = R3; - unlockClosure(R3, stg_MVAR_DIRTY_info); + unlockClosure(r3, stg_MVAR_DIRTY_info); R1 = r1; R3 = r3; jump StgReturn [R1]; @@ -546,7 +546,7 @@ stg_block_readmvar_finally W_ r1, r3; r1 = R1; r3 = R3; - unlockClosure(R3, stg_MVAR_DIRTY_info); + unlockClosure(r3, stg_MVAR_DIRTY_info); R1 = r1; R3 = r3; jump StgReturn [R1]; @@ -574,7 +574,7 @@ stg_block_putmvar_finally W_ r1, r3; r1 = R1; r3 = R3; - unlockClosure(R3, stg_MVAR_DIRTY_info); + unlockClosure(r3, stg_MVAR_DIRTY_info); R1 = r1; R3 = r3; jump StgReturn [R1]; |