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memtrace: Fix underflow when stack_depth < FRAMES_TO_SKIP #873

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merged 2 commits into from
Apr 23, 2024
Merged

memtrace: Fix underflow when stack_depth < FRAMES_TO_SKIP #873

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memtrace: Fix underflow when stack_depth < FRAMES_TO_SKIP
zhaofengli Dec 6, 2021
1171339
Merge branch 'main' into memtrace-underflow
DmitriyMusatkin Apr 22, 2024
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2 changes: 1 addition & 1 deletion source/memtrace.c
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Original file line number Diff line number Diff line change
Expand Up @@ -134,7 +134,7 @@ static void s_alloc_tracer_track(struct alloc_tracer *tracer, void *ptr, size_t
/* capture stack frames, skip 2 for this function and the allocation vtable function */
AWS_VARIABLE_LENGTH_ARRAY(void *, stack_frames, (FRAMES_TO_SKIP + tracer->frames_per_stack));
size_t stack_depth = aws_backtrace(stack_frames, FRAMES_TO_SKIP + tracer->frames_per_stack);
if (stack_depth) {
if (stack_depth >= FRAMES_TO_SKIP) {
/* hash the stack pointers */
struct aws_byte_cursor stack_cursor =
aws_byte_cursor_from_array(stack_frames, stack_depth * sizeof(void *));
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