[PATCH v8 12/13] lib/bootconfig: use size_t for key length tracking in xbc_verify_tree()

Josh Law
2026-03-18T15:59:34Z

lib/bootconfig.c:839:24: warning: conversion from 'size_t' to 'int'
may change value [-Wconversion]
lib/bootconfig.c:860:32: warning: conversion from 'size_t' to 'int'
may change value [-Wconversion]
lib/bootconfig.c:860:29: warning: conversion to 'size_t' from 'int'
may change the sign of the result [-Wsign-conversion]

The key length variables len and wlen accumulate strlen() results but
were declared as int, causing truncation and sign-conversion warnings.
Change both to size_t to match the strlen() return type and avoid
mixed-sign arithmetic.

Signed-off-by: Josh Law <objecting@objecting.org>
---
lib/bootconfig.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index 119c3d429c1f..272d9427e879 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -803,7 +803,8 @@ static int __init xbc_close_brace(char **k, char *n)

static int __init xbc_verify_tree(void)
{
- int i, depth, len, wlen;
+ int i, depth;
+ size_t len, wlen;
struct xbc_node *n, *m;

/* Brace closing */
--
2.34.1