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Fix memory corruption (bad-free) in ecma_string_pad (#4164)

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JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác csaba.osztrogonac@h-lab.eu
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Csaba Osztrogonác
2020-08-24 15:01:49 +02:00
committed by GitHub
parent 1bcfb711a3
commit 55b6b1aed7
2 changed files with 5 additions and 2 deletions
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jerry-core/ecma/base/ecma-helpers-string.c
+3 -2
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@@ -2580,11 +2580,12 @@ ecma_string_pad (ecma_value_t original_string_p, /**< Input ecma string */
uint32_t remaining = fill_len - (prepend_count * filler_length);
ECMA_STRING_TO_UTF8_STRING (filler_p, start_p, utf8_str_size);
const lit_utf8_byte_t *temp_start_p = start_p;
while (remaining > 0)
{
read_size = lit_read_code_unit_from_utf8 (start_p, &ch);
read_size = lit_read_code_unit_from_utf8 (temp_start_p, &ch);
ecma_stringbuilder_append_char (&builder, ch);
start_p += read_size;
temp_start_p += read_size;
remaining--;
}
ECMA_FINALIZE_UTF8_STRING (start_p, utf8_str_size);