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| author | Alex Rønne Petersen <alex@alexrp.com> | 2025-10-14 23:07:22 +0200 |
|---|---|---|
| committer | Alex Rønne Petersen <alex@alexrp.com> | 2025-10-15 13:59:17 +0200 |
| commit | 62a8cfd5fed1380331b10d20fbb7b08f206cf541 (patch) | |
| tree | f3dd6af5e91291d0a410888d20afdb56d6dd202e | |
| parent | a36dab2f90020c5544fddf68520c2057edc2ec00 (diff) | |
| download | zig-62a8cfd5fed1380331b10d20fbb7b08f206cf541.tar.gz zig-62a8cfd5fed1380331b10d20fbb7b08f206cf541.zip | |
std.debug: fix an invalid read in StackIterator.next()
We're overwriting the memory that unwind_context sits in, so we need to do the
getFp() call earlier.
| -rw-r--r-- | lib/std/debug.zig | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/std/debug.zig b/lib/std/debug.zig index 8501df175a..83322e8a6e 100644 --- a/lib/std/debug.zig +++ b/lib/std/debug.zig @@ -925,7 +925,8 @@ const StackIterator = union(enum) { const di_gpa = getDebugInfoAllocator(); const ret_addr = di.unwindFrame(di_gpa, unwind_context) catch |err| { const pc = unwind_context.pc; - it.* = .{ .fp = unwind_context.getFp() }; + const fp = unwind_context.getFp(); + it.* = .{ .fp = fp }; return .{ .switch_to_fp = .{ .address = pc, .err = err, |