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* [Bug libgcj/60282] New: memory leak - Double from string, _Jv_Balloc
@ 2014-02-20 8:23 antoine.dymond at gmail dot com
0 siblings, 0 replies; only message in thread
From: antoine.dymond at gmail dot com @ 2014-02-20 8:23 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60282
Bug ID: 60282
Summary: memory leak - Double from string, _Jv_Balloc
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcj
Assignee: unassigned at gcc dot gnu.org
Reporter: antoine.dymond at gmail dot com
I believe there is memory leak when creating a Double from a string. For
example
double value = (new Double("3.14")).doubleValue();
Valgrind output:
== 56 bytes in 1 blocks are definitely lost in loss record 17 of 31
== at 0x4C2A2DB: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
== by 0x6DE98D1: _Jv_Balloc (in /usr/lib/x86_64-linux-gnu/libgcj.so.14.0.0)
== by 0x6DEA378: _Jv_d2b (in /usr/lib/x86_64-linux-gnu/libgcj.so.14.0.0)
== by 0x6DE4BDB: _Jv_dtoa_r (in /usr/lib/x86_64-linux-gnu/libgcj.so.14.0.0)
== by 0x6DE5F0F: _Jv_dtoa (in /usr/lib/x86_64-linux-gnu/libgcj.so.14.0.0)
== by 0x65CBF9D: java::lang::String* java::lang::VMDouble::toString(double,
bool) (in /usr/lib/x86_64-linux-gnu/libgcj.so.14.0.0)
== by 0x6926404: java::lang::String* java::lang::Double::toString(double)
(in /usr/lib/x86_64-linux-gnu/libgcj.so.14.0.0)
== by 0x6926418: java::lang::AbstractStringBuffer*
java::lang::AbstractStringBuffer::append(double) (in
/usr/lib/x86_64-linux-gnu/libgcj.so.14.0.0)
== by 0x69264D8: java::lang::StringBuilder*
java::lang::StringBuilder::append(double) (in
/usr/lib/x86_64-linux-gnu/libgcj.so.14.0.0)
Reconstruct info
-----------------
$ more double_from_str.java
public class double_from_str {
public static void convert(){
double value = (new Double("3.14")).doubleValue();
System.out.printf("pi = " + value + "\n");
}
}
$ more main.cpp
#include <stdio.h>
#include <gcj/cni.h>
#include <java/lang/System.h>
#include <java/io/PrintStream.h>
#include <java/lang/Throwable.h>
#include "double_from_str.h"
int main(int argc, char *argv[])
{
using namespace java::lang;
try
{
JvCreateJavaVM(NULL);
JvAttachCurrentThread(NULL, NULL);
double_from_str().convert();
JvDetachCurrentThread();
return 0;
}
catch (Throwable *t)
{
printf("Unhandled Java exception\n");
t->printStackTrace();
return 1;
}
}
$ make -B
gcj -fPIC -c double_from_str.java
gcj -C double_from_str.java
gcjh double_from_str.class
gcj -g -lstdc++ double_from_str.o main.cpp -o main.o
cc1plus: warning: command line option
‘-fbootclasspath=./:/usr/share/java/libgcj-4.8.jar’ is valid for Java but not
for C++ [enabled by default]
$ valgrind --leak-check=yes ./main.o
...
$ apt-cache show valgrind
...
Architecture: amd64
Version: 1:3.8.1-4ubuntu1
...
>From gcc-bugs-return-444303-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 20 08:34:01 2014
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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/60283] New: Wrong code: decode_omp_directive: implicit_pure not correctly unset
Date: Thu, 20 Feb 2014 08:34:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`283
Bug ID: 60283
Summary: Wrong code: decode_omp_directive: implicit_pure not
correctly unset
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
decode_omp_directive (void) {
...
if (gfc_implicit_pure (NULL))
gfc_current_ns->proc_name->attr.implicit_pure = 0;
That code probably fails if one has BLOCK, which starts a new namespace.
Cf. discussion for OpenACC at
http://gcc.gnu.org/ml/gcc-patches/2014-02/msg01194.html
Patch r168600 of 2011-01-08 added this assignment and possibly others; I wonder
whether those also have problems with BLOCKS.
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2014-02-20 8:23 [Bug libgcj/60282] New: memory leak - Double from string, _Jv_Balloc antoine.dymond at gmail dot com
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