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-rw-r--r--src/xz/file_io.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/xz/file_io.c b/src/xz/file_io.c
index 61857029..a5841b37 100644
--- a/src/xz/file_io.c
+++ b/src/xz/file_io.c
@@ -768,6 +768,10 @@ io_open_src(const char *src_name)
// a statically allocated structure.
static file_pair pair;
+ // This implicitly also initializes src_st.st_size to zero
+ // which is expected to be <= 0 by default. fstat() isn't
+ // called when reading from standard input but src_st.st_size
+ // is still read.
pair = (file_pair){
.src_name = src_name,
.dest_name = NULL,