SEGV in parser_restore_private_context

[renatahodovan]

JerryScript revision

5020015 (v3.0.0)

Build platform

Ubuntu 24.04.1 LTS (Linux 6.8.0-49-generic x86_64)

Build steps

./tools/build.py --clean --debug --compile-flag=-fsanitize=address --logging=on

Test case

while (class {
  #size = isPrototypeOf`\${v0 in class {}?.super}`
}

Output

AddressSanitizer:DEADLYSIGNAL
=================================================================
==2075856==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x562d6b8e04b9 bp 0x7ffc38fcd440 sp 0x7ffc38fcd430 T0)
==2075856==The signal is caused by a READ memory access.
==2075856==Hint: address points to the zero page.
    #0 0x562d6b8e04b9 in parser_restore_private_context /home/reni/work/sut/jerryscript/jerry-core/parser/js/js-parser.c:1558
    #1 0x562d6b99aa26 in parser_parse_class /home/reni/work/sut/jerryscript/jerry-core/parser/js/js-parser-expr.c:1174
    #2 0x562d6b99faa7 in parser_parse_unary_expression /home/reni/work/sut/jerryscript/jerry-core/parser/js/js-parser-expr.c:2244
    #3 0x562d6b9a992a in parser_parse_expression /home/reni/work/sut/jerryscript/jerry-core/parser/js/js-parser-expr.c:4497
    #4 0x562d6b9b2a00 in parser_parse_while_statement_start /home/reni/work/sut/jerryscript/jerry-core/parser/js/js-parser-statm.c:971
    #5 0x562d6b9bc35a in parser_parse_statements /home/reni/work/sut/jerryscript/jerry-core/parser/js/js-parser-statm.c:2845
    #6 0x562d6b8e4ea2 in parser_parse_source /home/reni/work/sut/jerryscript/jerry-core/parser/js/js-parser.c:2280
    #7 0x562d6b8ea483 in parser_parse_script /home/reni/work/sut/jerryscript/jerry-core/parser/js/js-parser.c:3332
    #8 0x562d6b82a367 in jerry_parse_common /home/reni/work/sut/jerryscript/jerry-core/api/jerryscript.c:413
    #9 0x562d6b82a6cd in jerry_parse /home/reni/work/sut/jerryscript/jerry-core/api/jerryscript.c:481
    #10 0x562d6b9c83b0 in jerryx_source_parse_script /home/reni/work/sut/jerryscript/jerry-ext/util/sources.c:52
    #11 0x562d6b9c847f in jerryx_source_exec_script /home/reni/work/sut/jerryscript/jerry-ext/util/sources.c:63
    #12 0x562d6b82628e in main /home/reni/work/sut/jerryscript/jerry-main/main-desktop.c:156
    #13 0x7fc69b02a1c9  (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
    #14 0x7fc69b02a28a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 42c84c92e6f98126b3e2230ebfdead22c235b667)
    #15 0x562d6b8257a4 in _start (/home/reni/work/sut/jerryscript/build/bin/jerry+0x507a4) (BuildId: 1fe4c90920b1efd7f2c01b773ae2af1036aacaee)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/reni/work/sut/jerryscript/jerry-core/parser/js/js-parser.c:1558 in parser_restore_private_context
==2075856==ABORTING