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-rw-r--r--git-rediff.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/git-rediff.c b/git-rediff.c
index 009565c..c34e854 100644
--- a/git-rediff.c
+++ b/git-rediff.c
@@ -263,7 +263,8 @@ diff_subhunks(const struct subhunk *f1, const struct subhunk *f2)
if (waitpid(piddiff, &status, 0) != piddiff)
eprintf("waitpid <diff(1) subprocess> 0:");
if (status == 0) {
- ret = erealloc(ret, f1->text.nlines + 1U);
+ ret_off = f1->text.nlines;
+ ret = erealloc(ret, ret_off + 1U);
memset(ret, ' ', f1->text.nlines);
} else if (WIFEXITED(status) && WEXITSTATUS(status) == 1) {
ret = erealloc(ret, ret_off + 1U);