java/5913: Core dump for String constant instanceof

Eric.Blake@quaffle.ee.byu.edu Eric.Blake@quaffle.ee.byu.edu
Sun Mar 10 18:26:00 GMT 2002


>Number:         5913
>Category:       java
>Synopsis:       Core dump for String constant instanceof
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Mar 10 18:26:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Eric Blake
>Release:        3.1 20020309 (prerelease)
>Organization:
>Environment:
System: Linux quaffle 2.4.9-13smp #1 SMP Tue Oct 30 19:57:16 EST 2001 i686 unknown
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../gcc/configure --enable-threads=posix --prefix=/fpga3/users/eblake/gcc --enable-shared
>Description:
I encountered this while patching bug 5902. This program is legal, and
should print "true". Remember, + has higher precedence than
instanceof, and ""+1 is a constant with the value "1". A string
literal is always an instanceof String.

class Foo {
  public static void main(String[] args) {
    System.out.println((""+1) instanceof String);
  }
}

>How-To-Repeat:
bash-2.05$ gcj --main=Foo -o Foo Foo.java
Foo.java: In class `Foo':
Foo.java: In method `Foo.main(java.lang.String[])':
Foo.java:4: internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.


	<precise description of the problem (multiple lines)>
	
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted:



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