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-rw-r--r--ext/gmp/gmp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/gmp/gmp.c b/ext/gmp/gmp.c
index 928ec26005..a1e15899c9 100644
--- a/ext/gmp/gmp.c
+++ b/ext/gmp/gmp.c
@@ -1145,7 +1145,7 @@ ZEND_FUNCTION(gmp_export)
size_t bits_per_word = size * 8;
size_t count = (mpz_sizeinbase(gmpnumber, 2) + bits_per_word - 1) / bits_per_word;
- zend_string *out_string = zend_string_safe_alloc(count, out_len, 0, 0);
+ zend_string *out_string = zend_string_safe_alloc(count, size, 0, 0);
mpz_export(ZSTR_VAL(out_string), NULL, order, size, endian, 0, gmpnumber);
ZSTR_VAL(out_string)[ZSTR_LEN(out_string)] = '\0';