diff options
| -rw-r--r-- | nim.cfg | 1 | ||||
| -rw-r--r-- | src/utils/myaddr.nim | 18 |
2 files changed, 19 insertions, 0 deletions
diff --git a/nim.cfg b/nim.cfg index 8d688ac0..1dc64525 100644 --- a/nim.cfg +++ b/nim.cfg @@ -6,6 +6,7 @@ --experimental:"overloadableEnums" --warning:Effect:off --mm:refc +--include:"utils/myaddr" --import:"utils/eprint" --styleCheck:usages --styleCheck:hint diff --git a/src/utils/myaddr.nim b/src/utils/myaddr.nim new file mode 100644 index 00000000..4405e0c4 --- /dev/null +++ b/src/utils/myaddr.nim @@ -0,0 +1,18 @@ +# Before 2.0, `addr' only worked on mutable types, and `unsafeAddr' +# was needed to take the address of immutable ones. +# +# This was changed in 2.0 for some incomprehensible reason, so now to +# write code that compiles on both versions you have to take care that +# you use the right overload without compiler help. +# +# This module fixes the above problem; it is automatically included +# in every file by nim.cfg. + +when NimMajor >= 2: + const msg = "expression has no address; maybe use `unsafeAddr'" + + template addr(x: untyped): untyped {.used, error: msg.} = + discard + + template addr(x: var untyped): untyped {.used.} = + system.addr x |