diff options
| -rw-r--r-- | lib/pure/streams.nim | 10 | ||||
| -rw-r--r-- | tests/stdlib/tstreams.nim | 9 |
2 files changed, 15 insertions, 4 deletions
diff --git a/lib/pure/streams.nim b/lib/pure/streams.nim index 2ac6a82f1..f58273ee8 100644 --- a/lib/pure/streams.nim +++ b/lib/pure/streams.nim @@ -243,6 +243,9 @@ proc readDataStr*(s: Stream, buffer: var string, slice: Slice[int]): int = result = s.readDataStrImpl(s, buffer, slice) else: # fallback + when declared(prepareMutation): + # buffer might potentially be a CoW literal with ARC + prepareMutation(buffer) result = s.readData(addr buffer[slice.a], slice.b + 1 - slice.a) template jsOrVmBlock(caseJsOrVm, caseElse: untyped): untyped = @@ -1274,8 +1277,11 @@ else: # after 1.3 or JS not defined new(result) result.data = s - when declared(prepareMutation): - prepareMutation(result.data) # Allows us to mutate using `addr` logic like `copyMem`, otherwise it errors. + when nimvm: + discard + else: + when declared(prepareMutation): + prepareMutation(result.data) # Allows us to mutate using `addr` logic like `copyMem`, otherwise it errors. result.pos = 0 result.closeImpl = ssClose result.atEndImpl = ssAtEnd diff --git a/tests/stdlib/tstreams.nim b/tests/stdlib/tstreams.nim index 6fda30f51..d9857926e 100644 --- a/tests/stdlib/tstreams.nim +++ b/tests/stdlib/tstreams.nim @@ -1,4 +1,5 @@ discard """ + matrix: "--gc:refc; --gc:arc" input: "Arne" output: ''' Hello! What is your name? @@ -74,9 +75,13 @@ block: doAssert(ss.peekLine(str)) doAssert(str == "uick brown fox jumped over the lazy dog.") doAssert(ss.getPosition == 5) # haven't moved - ss.setPosition(0) # Ensure we dont error with writing over literals on arc/orc #19707 + # bug #19707 - Ensure we dont error with writing over literals on arc/orc + ss.setPosition(0) ss.write("hello") + ss.setPosition(0) + doAssert(ss.peekStr(5) == "hello") +# bug #19716 static: # Ensure streams it doesnt break with nimscript on arc/orc #19716 let s = newStringStream("a") - discard s.data + doAssert s.data == "a" |