diff options
Diffstat (limited to 'src/pkg/runtime/string.goc')
| -rw-r--r-- | src/pkg/runtime/string.goc | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/pkg/runtime/string.goc b/src/pkg/runtime/string.goc index b72aa937c3..15b3459ada 100644 --- a/src/pkg/runtime/string.goc +++ b/src/pkg/runtime/string.goc @@ -32,19 +32,23 @@ runtime·findnullw(uint16 *s) return l; } -int32 runtime·maxstring = 256; +uint32 runtime·maxstring = 256; String runtime·gostringsize(int32 l) { String s; + uint32 ms; if(l == 0) return runtime·emptystring; s.str = runtime·mal(l+1); // leave room for NUL for C runtime (e.g., callers of getenv) s.len = l; - if(l > runtime·maxstring) - runtime·maxstring = l; + for(;;) { + ms = runtime·maxstring; + if((uint32)l <= ms || runtime·cas(&runtime·maxstring, ms, (uint32)l)) + break; + } return s; } |