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[2017-01-13 14:28 UTC] stahlstift at gmail dot com
Description: ------------ C:\Users\username\PhpstormProjects\phpdbg>phpdbg [Welcome to phpdbg, the interactive PHP debugger, v0.5.0] To get help using phpdbg type "help" and press enter [Please report bugs to <http://bugs.php.net/report.php>] prompt> e test.php [Set execution context: C:\Users\username\PhpstormProjects\phpdbg\test.php] [Successful compilation of C:\Users\username\PhpstormProjects\phpdbg\test.php] prompt> l 20 00001: <?php 00002: 00003: // Generate some mock data 00004: $example = [1, 23, 23423, 256436, 3463, 4363, 457]; 00005: foreach (range(1, 1000) as $val) { 00006: $example[] = mt_rand(1, 10000); 00007: } 00008: 00009: // Stuff to debug 00010: function doCoolStuff($value) 00011: { 00012: $value++; 00013: 00014: return mt_rand(1, 1000); 00015: } 00016: 00017: $lower = []; 00018: foreach ($example as $key => $value) { 00019: if ($value < 100) { 00020: $lower[] = $value; prompt> b 19 [Breakpoint #0 added at C:\Users\username\PhpstormProjects\phpdbg\test.php:19] prompt> r [Breakpoint #0 at C:\Users\username\PhpstormProjects\phpdbg\test.php:19, hits: 1] >00019: if ($value < 100) { 00020: $lower[] = $value; 00021: } else { prompt> c [Breakpoint #0 at C:\Users\username\PhpstormProjects\phpdbg\test.php:19, hits: 2] >00019: if ($value < 100) { 00020: $lower[] = $value; 00021: } else { prompt> w $value [Set watchpoint on $value] prompt> w $lower[] Test script: --------------- <?php // Generate some mock data $example = [1, 23, 23423, 256436, 3463, 4363, 457]; foreach (range(1, 1000) as $val) { $example[] = mt_rand(1, 10000); } // Stuff to debug function doCoolStuff($value) { $value++; return mt_rand(1, 1000); } $lower = []; foreach ($example as $key => $value) { if ($value < 100) { $lower[] = $value; } else { doCoolStuff($value); } } PatchesPull Requests
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The given reproduce script results in a segfault on Debian with current master (e03739d4ab46b234709bdaa29280e16af94884c4): Program received signal SIGSEGV, Segmentation fault. 0x00005555559da136 in zval_get_type (pz=0x1) at /parent/php-src/Zend/zend_types.h:412 412 return pz->u1.v.type; (gdb) bt #0 0x00005555559da136 in zval_get_type (pz=0x1) at /parent/php-src/Zend/zend_types.h:412 #1 0x00005555559db36b in phpdbg_parse_variable_with_arg ( input=0x7ffff68010f0 "$lower[]", len=8, parent=0x7ffff68652a0, i=7, callback=0x5555559e8319 <phpdbg_watchpoint_parse_wrapper>, step_cb=0x5555559e8585 <phpdbg_watchpoint_parse_step>, silent=0 '\000', arg=0x7fffffffd1f0) at /parent/php-src/sapi/phpdbg/phpdbg_utils.c:474 #2 0x00005555559e88b9 in phpdbg_watchpoint_parse_symtables ( input=0x7ffff68010f0 "$lower[]", len=8, callback=0x5555559e8155 <phpdbg_create_simple_watchpoint>) at /parent/php-src/sapi/phpdbg/phpdbg_watch.c:1317 #3 0x00005555559e8a04 in phpdbg_create_var_watchpoint ( input=0x7ffff68010f0 "$lower[]", len=8) at /parent/php-src/sapi/phpdbg/phpdbg_watch.c:1347 #4 0x00005555559ce016 in phpdbg_do_watch (param=0x555555eb9310) at /parent/php-src/sapi/phpdbg/phpdbg_prompt.c:1594 #5 0x00005555559e1c3f in phpdbg_internal_stack_execute (stack=0x7fffffffd2d0, allow_async_unsafe=1 '\001') at /parent/php-src/sapi/phpdbg/phpdbg_cmd.c:703 #6 0x00005555559e1d32 in phpdbg_stack_execute (stack=0x7fffffffd2d0, allow_async_unsafe=1 '\001') at /parent/php-src/sapi/phpdbg/phpdbg_cmd.c:733 #7 0x00005555559ce163 in phpdbg_interactive (allow_async_unsafe=1 '\001', input=0x7ffff68010c0 "w $lower[]\n") at /parent/php-src/sapi/phpdbg/phpdbg_prompt.c:1631 #8 0x00005555559cf15d in phpdbg_execute_ex (execute_data=0x7ffff6821030) at /parent/php-src/sapi/phpdbg/phpdbg_prompt.c:1877 #9 0x00005555559bcb47 in zend_execute (op_array=0x7ffff686f400, return_value=0x555555e6afe0 <phpdbg_globals+1344>) at /parent/php-src/Zend/zend_vm_execute.h:59961 #10 0x00005555559cbd57 in phpdbg_do_run (param=0x0) at /parent/php-src/sapi/phpdbg/phpdbg_prompt.c:942 #11 0x00005555559e1c3f in phpdbg_internal_stack_execute (stack=0x7fffffffd7e0, allow_async_unsafe=1 '\001') at /parent/php-src/sapi/phpdbg/phpdbg_cmd.c:703 #12 0x00005555559e1d32 in phpdbg_stack_execute (stack=0x7fffffffd7e0, allow_async_unsafe=1 '\001') at /parent/php-src/sapi/phpdbg/phpdbg_cmd.c:733 #13 0x00005555559ce163 in phpdbg_interactive (allow_async_unsafe=1 '\001', input=0x7ffff6804050 "r\n") at /parent/php-src/sapi/phpdbg/phpdbg_prompt.c:1631 #14 0x00005555559c2e8e in main (argc=1, argv=0x7fffffffe648) at /parent/php-src/sapi/phpdbg/phpdbg.c:2008