digitalmars.D.bugs - [Issue 24592] New: ImportC: Bitfield layout wrong for int64 on
- d-bugmail puremagic.com (37/37) Jun 09 https://issues.dlang.org/show_bug.cgi?id=24592
https://issues.dlang.org/show_bug.cgi?id=24592 Issue ID: 24592 Summary: ImportC: Bitfield layout wrong for int64 on 32-bit Linux Product: D Version: D2 Hardware: x86 OS: Linux Status: NEW Severity: normal Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: tim.dlang t-online.de The followng struct from /usr/include/linux/perf_event.h has the wrong size with ImportC: ``` struct perf_branch_entry { __u64 from; __u64 to; __u64 mispred:1, /* target mispredicted */ predicted:1,/* target predicted */ in_tx:1, /* in transaction */ abort:1, /* transaction abort */ cycles:16, /* cycle count to last branch */ type:4, /* branch type */ spec:2, /* branch speculation info */ new_type:4, /* additional branch type */ priv:3, /* privilege level */ reserved:31; }; ``` With ImportC and dmd -m32 on Linux this has size 28, but with gcc -m32 it has size 24. Found by comparing type sizes in druntime with type sizes found with ImportC: https://github.com/dlang/dmd/pull/16571 --
Jun 09