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-rw-r--r--src/common/unicode_norm.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/common/unicode_norm.c b/src/common/unicode_norm.c
index 5000565aa8b..2db059cfb78 100644
--- a/src/common/unicode_norm.c
+++ b/src/common/unicode_norm.c
@@ -342,6 +342,10 @@ unicode_normalize_kc(const pg_wchar *input)
decomp_chars[decomp_size] = '\0';
Assert(decomp_size == current_size);
+ /* Leave if there is nothing to decompose */
+ if (decomp_size == 0)
+ return decomp_chars;
+
/*
* Now apply canonical ordering.
*/