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-rw-r--r--builtin/get-tar-commit-id.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/builtin/get-tar-commit-id.c b/builtin/get-tar-commit-id.c
index 66a7389f9f..7195a072ed 100644
--- a/builtin/get-tar-commit-id.c
+++ b/builtin/get-tar-commit-id.c
@@ -35,6 +35,7 @@ int cmd_get_tar_commit_id(int argc, const char **argv UNUSED, const char *prefix
if (header->typeflag[0] != TYPEFLAG_GLOBAL_HEADER)
return 1;
+ errno = 0;
len = strtol(content, &end, 10);
if (errno == ERANGE || end == content || len < 0)
return 1;