Index: uspace/lib/c/arch/arm32/src/stacktrace.c
===================================================================
--- uspace/lib/c/arch/arm32/src/stacktrace.c	(revision d4a829e15ff53d4529f6faccc7aa01dc9efccd08)
+++ uspace/lib/c/arch/arm32/src/stacktrace.c	(revision a53ed3a8097360ccf174e8d94fb407db919eb66a)
@@ -49,10 +49,10 @@
 }
 
-int stacktrace_fp_prev(stacktrace_t *st, uintptr_t fp, uintptr_t *prev)
+errno_t stacktrace_fp_prev(stacktrace_t *st, uintptr_t fp, uintptr_t *prev)
 {
 	return (*st->ops->read_uintptr)(st->op_arg, fp + FRAME_OFFSET_FP_PREV, prev);
 }
 
-int stacktrace_ra_get(stacktrace_t *st, uintptr_t fp, uintptr_t *ra)
+errno_t stacktrace_ra_get(stacktrace_t *st, uintptr_t fp, uintptr_t *ra)
 {
 	return (*st->ops->read_uintptr)(st->op_arg, fp + FRAME_OFFSET_RA, ra);