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fix: compare the coredump build SHA without reading past the array

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app_elf_sha256 has no terminator (IDF 4.4 fills all 17 bytes), so strcmp
never matched the running build and %s printed whatever followed it.  Copy
it into a terminated buffer first.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
cjkas 2026-10-12 18:29:59 +02:00
parent 2ee7af51ab
commit e1c76bc2af
2 changed files with 15 additions and 1 deletions
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10
test/test_utils/test_utils.cpp
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@ -79,6 +79,15 @@ static void test_setcharprop_truncates_long_value() {
SETCHARPROP(prop, "abcdefgh", sizeof(prop));
TEST_ASSERT_EQUAL_STRING("abcd", prop);
}
static void test_setcharprop_unterminated_source() {
// A coredump's app_elf_sha256 can be full of hex digits with no terminator.
// The copy must stop inside the array and come out as a comparable string.
const char crashed[17] = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f','9'};
char sha[sizeof(crashed)];
SETCHARPROP(sha, crashed, sizeof(sha));
TEST_ASSERT_EQUAL_STRING("0123456789abcdef", sha);
TEST_ASSERT_EQUAL_INT(0, strcmp(sha, "0123456789abcdef"));
}
/*********************************************************************
* sortArray / sortArrayReverse
@ -202,6 +211,7 @@ int main(int argc, char **argv) {
RUN_TEST(test_toBoolean_unknown_uses_default);
RUN_TEST(test_setcharprop_copies_short_value);
RUN_TEST(test_setcharprop_truncates_long_value);
RUN_TEST(test_setcharprop_unterminated_source);
RUN_TEST(test_sortArray_ascending);
RUN_TEST(test_sortArrayReverse_descending);
RUN_TEST(test_sortArray_custom_comparator);