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6631046: BufferedInputStream.available() reports negative int on very large inputstream

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Reviewed-by: dholmes, alanb, mduigou
This commit is contained in:
Mandy Chung 2010-11-19 10:00:08 -08:00
parent 1d73aa8704
commit a48d403c44
2 changed files with 10 additions and 2 deletions
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6
jdk/src/share/classes/java/io/BufferedInputStream.java
View File

@ -395,7 +395,11 @@ class BufferedInputStream extends FilterInputStream {
* or an I/O error occurs.
*/
public synchronized int available() throws IOException {
return getInIfOpen().available() + (count - pos);
int n = count - pos;
int avail = getInIfOpen().available();
return n > (Integer.MAX_VALUE - avail)
? Integer.MAX_VALUE
: n + avail;
}
/**

6
jdk/src/share/classes/java/io/PushbackInputStream.java
View File

@ -273,7 +273,11 @@ class PushbackInputStream extends FilterInputStream {
*/
public int available() throws IOException {
ensureOpen();
return (buf.length - pos) + super.available();
int n = buf.length - pos;
int avail = super.available();
return n > (Integer.MAX_VALUE - avail)
? Integer.MAX_VALUE
: n + avail;
}
/**