Fixes CID #1468682 where target is dereferenced before it has been
checked as to whether it is null or not in the
rtems_debugger_target_swbreak_control function.
---
cpukit/libdebugger/rtems-debugger-target.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/cpukit/libdebugger/rtems-debugger-target.c
b/cpukit/libdebugger/rtems-debugger-target.c
index e495170..3726a6c 100644
--- a/cpukit/libdebugger/rtems-debugger-target.c
+++ b/cpukit/libdebugger/rtems-debugger-target.c
@@ -171,17 +171,18 @@ int
rtems_debugger_target_swbreak_control(bool insert, DB_UINT addr, DB_UINT kind)
{
rtems_debugger_target* target = rtems_debugger->target;
- rtems_debugger_target_swbreak* swbreaks = target->swbreaks.block;
size_t swbreak_size;
uint8_t* loc = (void*) addr;
size_t i;
int r;
- if (target == NULL || swbreaks == NULL || kind != target->breakpoint_size) {
+ if (target == NULL || target->swbreaks.block == NULL ||
+ kind != target->breakpoint_size) {
errno = EIO;
return -1;
}
+ rtems_debugger_target_swbreak* swbreaks = target->swbreaks.block;
swbreak_size =
sizeof(rtems_debugger_target_swbreak) + target->breakpoint_size;
--
1.8.3.1
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