fix printing of -(1<<63)

R=r
OCL=15441
CL=15445

src/runtime/print.c

@@ -112,15 +112,16 @@ void
 sys·printint(int64 v)
 {
 	byte buf[100];
-	int32 i, s;
+	int32 i, s, big;
 
+	big = 0;
 	s = 0;
 	if(v < 0) {
 		v = -v;
 		s = 1;
 		if(v < 0) {
-			sys·write(1, (byte*)"-oo", 3);
-			return;
+			big = 1;
+			v--;
 		}
 	}
 
@@ -130,10 +131,13 @@ sys·printint(int64 v)
 			break;
 		v = v/10;
 	}
-	if(s) {
+	if(s){
 		i--;
 		buf[i] = '-';
 	}
+	if(big){
+		buf[nelem(buf)-1]++;
+	}
 	sys·write(1, buf+i, nelem(buf)-i);
 }
 

test/golden.out

@@ -1,30 +1,4 @@
 
-=========== ./bufiolib.go
-throw: index out of range
-SIGSEGV: segmentation violation
-Faulting address: 0x0
-pc: 0x11c43
-
-0x11c43?zi
-	throw(98060, 0, 235528, ...)
-	throw(0x17f0c, 0x39808, 0x5e2e, ...)
-0x11b97?zi
-	sys·throwindex(235528, 0, 0, ...)
-	sys·throwindex(0x39808, 0x0, 0x1, ...)
-0x5e2e?zi
-	bufio·BufRead_ReadLineString(235312, 0, 65546, ...)
-	bufio·BufRead_ReadLineString(0x39730, 0x1000a, 0x39758, ...)
-0x1cb8?zi
-	main·ReadLines(235312, 0, 235304, ...)
-	main·ReadLines(0x39730, 0x39728, 0x1, ...)
-0x2bb5?zi
-	main·TestBufRead(85470, 0, 1, ...)
-	main·TestBufRead(0x14dde, 0x1, 0x7fff5fbff268, ...)
-0x3830?zi
-	main·main(1, 0, 1606414952, ...)
-	main·main(0x1, 0x7fff5fbff268, 0x0, ...)
-
-
 =========== ./func1.go
 func1.go:12: var a redeclared in this block
      previous declaration at func1.go:12
@@ -48,6 +22,10 @@ skipping increment test until bug060 is fixed
 9! = 362880
 10! = 3628800
 
+=========== ./printbig.go
+-9223372036854775808
+9223372036854775807
+
 =========== ./turing.go
 Hello World!
 

test/printbig.go

@@ -0,0 +1,12 @@
+// $G $F.go && $L $F.$A && ./$A.out
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+func main() {
+	print(-(1<<63), "\n");
+	print((1<<63)-1, "\n")
+}