HP gnu source-level debugger 5992-4701 User Manual

Page 161

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info leaks filename

Writes the complete leak report output to the
specified file.

info leak leaknumber

Produces detailed information on the specified
leak including the allocation call stack.

set heap-check block-size

num-bytes

Instructs WDB to stop the program whenever it
tries to allocate a block larger than num-bytes in
size.

set heap-check heap-size

num-size

Instructs WDB to stop the program whenever it
tries to increase the program heap by at least
num-bytes.

min-heap-size

This option reports the heap allocations that
exceed the specified number <num> of bytes
based on the cumulative number of bytes that
are allocated at each call-site, which is inclusive
of multiple calls to malloc at a particular call
site.

set heap-check watch

address

Stops the program whenever a block at a
specified address is allocated or deal- located.

set heap-check null-check

[N | random]

Force malloc to return NULL after N or random
number of invocations of malloc. Use set
heap-check random-range N

and set

heap-check seed-value N

to define the seed

value and range for random number calculation.
Useful for simulating out-of-memory situations.

set heap-check

null-check-size N

Force malloc to return NULL after N bytes have
been allocated by the program.

catch nomem

Allows the user to get control of an
out-of-memory event. The user can step through
once the nomem event is caught to see whether
the out-of-memory event is handled correctly.

set heap-check free [on |

off]

When set to on, forces WDB to stop the program
when it detects a call to free() with an
improper argument, a call to realloc() that
does not point to a valid currently allocated heap
block, or a call to free a block of memory, which
has been corrupted. Refer set heap-check
bounds

for details on detecting memory

corruption.

set heap-check string [on

| off]

Toggles validation of calls to strcpy, strncpy,
memcpy

, memccpy, memset, memmove, bzero,

14.10 Debugging Memory Problems

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