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Fix free and free-mismatch err so the top frame in the bt isn't skipped.

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Put a better example of free-mismatch error in the manual.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@190
This commit is contained in:
Julian Seward 2002-05-01 21:46:38 +00:00
parent 6b485c7718
commit 50ca1d2fc2
6 changed files with 48 additions and 44 deletions
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21
cachegrind/docs/manual.html
View File

@ -792,18 +792,19 @@ be told that -- making duplicate frees of the same block easy to spot.
<h4>2.6.4&nbsp; When a block is freed with an inappropriate
deallocation function</h4>
For example:
In the following example, a block allocated with <code>new []</code>
has wrongly been deallocated with <code>free</code>:
<pre>
Mismatched free() / delete / delete []
at 0x40303847: DeviceContextImpl::~DeviceContextImpl(void)
by 0x45149BCB: nsDeviceContextGTK::~nsDeviceContextGTK(void)
by 0x4030341A: DeviceContextImpl::Release(void)
by 0x460C0CAC: nsBaseWidget::OnDestroy(void)
Address 0x41C11A7C is 0 bytes inside a block of size 120 alloc'd
at 0x40040BEC: malloc (vg_clientfuncs.c:100)
by 0x4516DAAC: ??? (../../gcc-2.95.3/gcc/cp/new1.cc:78)
by 0x4515FA11: nsDeviceContextGTKConstructor(nsISupports *, ...
by 0x40553ABB: nsGenericFactory::CreateInstance(nsISupports *, ...
at 0x40043249: free (vg_clientfuncs.c:171)
by 0x4102BB4E: QGArray::~QGArray(void) (tools/qgarray.cpp:149)
by 0x4C261C41: PptDoc::~PptDoc(void) (include/qmemarray.h:60)
by 0x4C261F0E: PptXml::~PptXml(void) (pptxml.cc:44)
Address 0x4BB292A8 is 0 bytes inside a block of size 64 alloc'd
at 0x4004318C: __builtin_vec_new (vg_clientfuncs.c:152)
by 0x4C21BC15: KLaola::readSBStream(int) const (klaola.cc:314)
by 0x4C21C155: KLaola::stream(KLaola::OLENode const *) (klaola.cc:416)
by 0x4C21788F: OLEFilter::convert(QCString const &) (olefilter.cc:272)
</pre>
The following was told to me be the KDE 3 developers. I didn't know
any of it myself. They also implemented the check itself.

21
coregrind/docs/manual.html
View File

@ -792,18 +792,19 @@ be told that -- making duplicate frees of the same block easy to spot.
<h4>2.6.4&nbsp; When a block is freed with an inappropriate
deallocation function</h4>
For example:
In the following example, a block allocated with <code>new []</code>
has wrongly been deallocated with <code>free</code>:
<pre>
Mismatched free() / delete / delete []
at 0x40303847: DeviceContextImpl::~DeviceContextImpl(void)
by 0x45149BCB: nsDeviceContextGTK::~nsDeviceContextGTK(void)
by 0x4030341A: DeviceContextImpl::Release(void)
by 0x460C0CAC: nsBaseWidget::OnDestroy(void)
Address 0x41C11A7C is 0 bytes inside a block of size 120 alloc'd
at 0x40040BEC: malloc (vg_clientfuncs.c:100)
by 0x4516DAAC: ??? (../../gcc-2.95.3/gcc/cp/new1.cc:78)
by 0x4515FA11: nsDeviceContextGTKConstructor(nsISupports *, ...
by 0x40553ABB: nsGenericFactory::CreateInstance(nsISupports *, ...
at 0x40043249: free (vg_clientfuncs.c:171)
by 0x4102BB4E: QGArray::~QGArray(void) (tools/qgarray.cpp:149)
by 0x4C261C41: PptDoc::~PptDoc(void) (include/qmemarray.h:60)
by 0x4C261F0E: PptXml::~PptXml(void) (pptxml.cc:44)
Address 0x4BB292A8 is 0 bytes inside a block of size 64 alloc'd
at 0x4004318C: __builtin_vec_new (vg_clientfuncs.c:152)
by 0x4C21BC15: KLaola::readSBStream(int) const (klaola.cc:314)
by 0x4C21C155: KLaola::stream(KLaola::OLENode const *) (klaola.cc:416)
by 0x4C21788F: OLEFilter::convert(QCString const &) (olefilter.cc:272)
</pre>
The following was told to me be the KDE 3 developers. I didn't know
any of it myself. They also implemented the check itself.

4
coregrind/vg_errcontext.c
View File

@ -641,7 +641,7 @@ void VG_(record_free_error) ( ThreadState* tst, Addr a )
clear_ErrContext( &ec );
ec.count = 1;
ec.next = NULL;
ec.where = VG_(get_ExeContext)( True, tst->m_eip, tst->m_ebp );
ec.where = VG_(get_ExeContext)( False, tst->m_eip, tst->m_ebp );
ec.ekind = FreeErr;
ec.addr = a;
ec.tid = tst->tid;
@ -659,7 +659,7 @@ void VG_(record_freemismatch_error) ( ThreadState* tst, Addr a )
clear_ErrContext( &ec );
ec.count = 1;
ec.next = NULL;
ec.where = VG_(get_ExeContext)( True, tst->m_eip, tst->m_ebp );
ec.where = VG_(get_ExeContext)( False, tst->m_eip, tst->m_ebp );
ec.ekind = FreeMismatchErr;
ec.addr = a;
ec.tid = tst->tid;

21
docs/manual.html
View File

@ -792,18 +792,19 @@ be told that -- making duplicate frees of the same block easy to spot.
<h4>2.6.4&nbsp; When a block is freed with an inappropriate
deallocation function</h4>
For example:
In the following example, a block allocated with <code>new []</code>
has wrongly been deallocated with <code>free</code>:
<pre>
Mismatched free() / delete / delete []
at 0x40303847: DeviceContextImpl::~DeviceContextImpl(void)
by 0x45149BCB: nsDeviceContextGTK::~nsDeviceContextGTK(void)
by 0x4030341A: DeviceContextImpl::Release(void)
by 0x460C0CAC: nsBaseWidget::OnDestroy(void)
Address 0x41C11A7C is 0 bytes inside a block of size 120 alloc'd
at 0x40040BEC: malloc (vg_clientfuncs.c:100)
by 0x4516DAAC: ??? (../../gcc-2.95.3/gcc/cp/new1.cc:78)
by 0x4515FA11: nsDeviceContextGTKConstructor(nsISupports *, ...
by 0x40553ABB: nsGenericFactory::CreateInstance(nsISupports *, ...
at 0x40043249: free (vg_clientfuncs.c:171)
by 0x4102BB4E: QGArray::~QGArray(void) (tools/qgarray.cpp:149)
by 0x4C261C41: PptDoc::~PptDoc(void) (include/qmemarray.h:60)
by 0x4C261F0E: PptXml::~PptXml(void) (pptxml.cc:44)
Address 0x4BB292A8 is 0 bytes inside a block of size 64 alloc'd
at 0x4004318C: __builtin_vec_new (vg_clientfuncs.c:152)
by 0x4C21BC15: KLaola::readSBStream(int) const (klaola.cc:314)
by 0x4C21C155: KLaola::stream(KLaola::OLENode const *) (klaola.cc:416)
by 0x4C21788F: OLEFilter::convert(QCString const &) (olefilter.cc:272)
</pre>
The following was told to me be the KDE 3 developers. I didn't know
any of it myself. They also implemented the check itself.

21
memcheck/docs/manual.html
View File

@ -792,18 +792,19 @@ be told that -- making duplicate frees of the same block easy to spot.
<h4>2.6.4&nbsp; When a block is freed with an inappropriate
deallocation function</h4>
For example:
In the following example, a block allocated with <code>new []</code>
has wrongly been deallocated with <code>free</code>:
<pre>
Mismatched free() / delete / delete []
at 0x40303847: DeviceContextImpl::~DeviceContextImpl(void)
by 0x45149BCB: nsDeviceContextGTK::~nsDeviceContextGTK(void)
by 0x4030341A: DeviceContextImpl::Release(void)
by 0x460C0CAC: nsBaseWidget::OnDestroy(void)
Address 0x41C11A7C is 0 bytes inside a block of size 120 alloc'd
at 0x40040BEC: malloc (vg_clientfuncs.c:100)
by 0x4516DAAC: ??? (../../gcc-2.95.3/gcc/cp/new1.cc:78)
by 0x4515FA11: nsDeviceContextGTKConstructor(nsISupports *, ...
by 0x40553ABB: nsGenericFactory::CreateInstance(nsISupports *, ...
at 0x40043249: free (vg_clientfuncs.c:171)
by 0x4102BB4E: QGArray::~QGArray(void) (tools/qgarray.cpp:149)
by 0x4C261C41: PptDoc::~PptDoc(void) (include/qmemarray.h:60)
by 0x4C261F0E: PptXml::~PptXml(void) (pptxml.cc:44)
Address 0x4BB292A8 is 0 bytes inside a block of size 64 alloc'd
at 0x4004318C: __builtin_vec_new (vg_clientfuncs.c:152)
by 0x4C21BC15: KLaola::readSBStream(int) const (klaola.cc:314)
by 0x4C21C155: KLaola::stream(KLaola::OLENode const *) (klaola.cc:416)
by 0x4C21788F: OLEFilter::convert(QCString const &) (olefilter.cc:272)
</pre>
The following was told to me be the KDE 3 developers. I didn't know
any of it myself. They also implemented the check itself.

4
vg_errcontext.c
View File

@ -641,7 +641,7 @@ void VG_(record_free_error) ( ThreadState* tst, Addr a )
clear_ErrContext( &ec );
ec.count = 1;
ec.next = NULL;
ec.where = VG_(get_ExeContext)( True, tst->m_eip, tst->m_ebp );
ec.where = VG_(get_ExeContext)( False, tst->m_eip, tst->m_ebp );
ec.ekind = FreeErr;
ec.addr = a;
ec.tid = tst->tid;
@ -659,7 +659,7 @@ void VG_(record_freemismatch_error) ( ThreadState* tst, Addr a )
clear_ErrContext( &ec );
ec.count = 1;
ec.next = NULL;
ec.where = VG_(get_ExeContext)( True, tst->m_eip, tst->m_ebp );
ec.where = VG_(get_ExeContext)( False, tst->m_eip, tst->m_ebp );
ec.ekind = FreeMismatchErr;
ec.addr = a;
ec.tid = tst->tid;