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7073913: The fix for 7017193 causes segfaults

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Buffer overflow in os::get_line_chars

Reviewed-by: coleenp, dholmes, dcubed
This commit is contained in:
Andrew Haley 2011-08-10 15:04:21 +04:00 committed by Dmitry Samersoff
parent 28383f3e18
commit aefb3a004f
1 changed files with 2 additions and 2 deletions
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4
hotspot/src/share/vm/runtime/os.cpp
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@ -1299,7 +1299,7 @@ int os::get_line_chars(int fd, char* buf, const size_t bsize){
size_t sz, i = 0;
// read until EOF, EOL or buf is full
while ((sz = (int) read(fd, &buf[i], 1)) == 1 && i < (bsize-1) && buf[i] != '\n') {
while ((sz = (int) read(fd, &buf[i], 1)) == 1 && i < (bsize-2) && buf[i] != '\n') {
++i;
}
@ -1320,7 +1320,7 @@ int os::get_line_chars(int fd, char* buf, const size_t bsize){
}
// line is longer than size of buf, skip to EOL
int ch;
char ch;
while (read(fd, &ch, 1) == 1 && ch != '\n') {
// Do nothing
}