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-rw-r--r--Zend/zend_compile.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index c8f2eefa7d..14ed6a7435 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -1842,7 +1842,7 @@ zend_ast *zend_negate_num_string(zend_ast *ast) /* {{{ */
}
} else if (Z_TYPE_P(zv) == IS_STRING) {
size_t orig_len = Z_STRLEN_P(zv);
- zend_string_extend(Z_STR_P(zv), orig_len + 1, 0);
+ Z_STR_P(zv) = zend_string_extend(Z_STR_P(zv), orig_len + 1, 0);
memmove(Z_STRVAL_P(zv) + 1, Z_STRVAL_P(zv), orig_len + 1);
Z_STRVAL_P(zv)[0] = '-';
} else {