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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2019-02-06 20:46:00 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2019-02-06 20:46:00 +0000 |
| commit | 73fe55d7522864d20026dc8d427026dc4078f9cc (patch) | |
| tree | e70328d426f425d14f9064eb8c7cc43c12f1772f /gcc/expr.c | |
| parent | 16e2bcd5b9371ca6062bf035bc1d6b88540841d1 (diff) | |
| download | gcc-73fe55d7522864d20026dc8d427026dc4078f9cc.zip gcc-73fe55d7522864d20026dc8d427026dc4078f9cc.tar.gz gcc-73fe55d7522864d20026dc8d427026dc4078f9cc.tar.bz2 | |
re PR go/89199 (libgo regression in implementation of CompareAndSwap functions resulting in intermittent testcase failures on ppc64le power9 after r268458)
PR go/89199
sync/atomic: use strong form of atomic_compare_exchange_n
In the recent change to use atomic_compare_exchange_n I thought we
could use the weak form, which can spuriously fail. But that is not
how it is implemented in the gc library, and it is not what the rest
of the library expects.
Thanks to Lynn Boger for identifying the problem.
Fixes https://gcc.gnu.org/PR89199
Reviewed-on: https://go-review.googlesource.com/c/161359
From-SVN: r268591
Diffstat (limited to 'gcc/expr.c')
0 files changed, 0 insertions, 0 deletions