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On simple strings the utf8 substring copy api call created an assert (#2389)

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When the `jerry_substring_to_utf8_char_buffer` was called
with direct strings the assert incorrectly assumed that the
string is a ref counted string and tried to access the
refcount value resulting in a failed assert.

Added direct string check for the underlying implementation
and created a test case for such simple string.

JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com
This commit is contained in:
Péter Gál
2018-06-11 03:19:39 +02:00
committed by yichoi
parent 2d0e37ff74
commit d637e31933
2 changed files with 25 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-core/ecma/base/ecma-helpers-string.c
+1 -1
View File
@@ -1226,7 +1226,7 @@ ecma_substring_copy_to_utf8_buffer (const ecma_string_t *string_desc_p, /**< ecm
lit_utf8_size_t buffer_size) /**< size of buffer */
{
JERRY_ASSERT (string_desc_p != NULL);
JERRY_ASSERT (string_desc_p->refs_and_container >= ECMA_STRING_REF_ONE);
JERRY_ASSERT (ECMA_IS_DIRECT_STRING (string_desc_p) || string_desc_p->refs_and_container >= ECMA_STRING_REF_ONE);
JERRY_ASSERT (buffer_p != NULL || buffer_size == 0);
lit_utf8_size_t size = 0;
tests/unit-core/test-api.c
+24
View File
@@ -514,6 +514,30 @@ main (void)
TEST_ASSERT (utf8_sz == 12);
jerry_release_value (args[0]);
/* Test string: '3' */
{
jerry_value_t test_str = jerry_create_string ((const jerry_char_t *) "3");
char result_string[1] = { 'E' };
jerry_size_t copied_utf8 = jerry_substring_to_utf8_char_buffer (test_str,
0,
1,
(jerry_char_t *) result_string,
sizeof (result_string));
TEST_ASSERT (copied_utf8 == 1);
TEST_ASSERT (result_string[0] == '3');
result_string[0] = 'E';
jerry_size_t copied = jerry_substring_to_char_buffer (test_str,
0,
1,
(jerry_char_t *) result_string,
sizeof (result_string));
TEST_ASSERT (copied == 1);
TEST_ASSERT (result_string[0] == '3');
jerry_release_value (test_str);
}
/* Test jerry_substring_to_char_buffer */
args[0] = jerry_create_string ((jerry_char_t *) "an ascii string");