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| author | Ayke van Laethem <[email protected]> | 2018-10-29 14:02:47 +0100 |
|---|---|---|
| committer | Ayke van Laethem <[email protected]> | 2018-10-29 14:02:47 +0100 |
| commit | 772c6486ab39ded397f9c830c61865e17df45035 (patch) | |
| tree | 6f75ed85e7ae111001863023464faca3a88508ee /src/runtime/runtime.go | |
| parent | d90d7be8a8f167c3e39292da36f18af1f311b2cf (diff) | |
| download | tinygo-772c6486ab39ded397f9c830c61865e17df45035.tar.gz tinygo-772c6486ab39ded397f9c830c61865e17df45035.zip | |
runtime: correctly copy a zero-length buffer backwards
Fixes:
https://github.com/aykevl/tinygo/issues/64
Diffstat (limited to 'src/runtime/runtime.go')
| -rw-r--r-- | src/runtime/runtime.go | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/src/runtime/runtime.go b/src/runtime/runtime.go index 209bbf880..d7b8d244a 100644 --- a/src/runtime/runtime.go +++ b/src/runtime/runtime.go @@ -54,13 +54,9 @@ func memmove(dst, src unsafe.Pointer, size uintptr) { return } // Copy backwards. - i := size - for { + for i := size; i != 0; { i-- *(*uint8)(unsafe.Pointer(uintptr(dst) + i)) = *(*uint8)(unsafe.Pointer(uintptr(src) + i)) - if i == 0 { - break - } } } |