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Bug 22935 – importC: offsetof with array element gives 'dereference of invalid pointer'

Status: RESOLVED
Resolution: FIXED
Severity: normal
Priority: P1
Component: dmd
Product: D
Version: D2
Platform: All
OS: All
Creation time: 2022-03-25T15:36:16Z
Last change time: 2022-03-31T08:23:22Z
Keywords: ImportC, pull, rejects-valid
Assigned to: No Owner
Creator: duser
See also: https://issues.dlang.org/show_bug.cgi?id=22929

Comments

Comment #0 by duser — 2022-03-25T15:36:16Z

using the offsetof macro from importc.h: typedef unsigned long size_t; struct S { char text[4]; }; //int tmp = __builtin_offsetof(struct S, text[0]); int tmp = ((size_t)((char *)&((struct S *)0)->text[0] - (char *)0)); Error: dereference of invalid pointer `cast(S*)0LU` the fix for issue 22809 didn't affect this

Comment #1 by dlang-bot — 2022-03-30T08:03:25Z

@WalterBright created dlang/dmd pull request #13925 "fix Issue 22935 - importC: offsetof with array element gives 'derefer…" fixing this issue: - fix Issue 22935 - importC: offsetof with array element gives 'dereference of invalid pointer' https://github.com/dlang/dmd/pull/13925

Comment #2 by dlang-bot — 2022-03-31T08:23:22Z

dlang/dmd pull request #13925 "fix Issue 22935 - importC: offsetof with array element gives 'derefer…" was merged into master: - 10a7ee5bd5e8f4572ae9864dbba7ea6ab733edf4 by Walter Bright: fix Issue 22935 - importC: offsetof with array element gives 'dereference of invalid pointer' https://github.com/dlang/dmd/pull/13925