digitalmars.D.bugs - [Issue 19054] New: alloca() crashes with SEGFAULT after an exception
- d-bugmail puremagic.com (39/39) Jul 04 2018 https://issues.dlang.org/show_bug.cgi?id=19054
https://issues.dlang.org/show_bug.cgi?id=19054 Issue ID: 19054 Summary: alloca() crashes with SEGFAULT after an exception Product: D Version: D2 Hardware: x86_64 OS: Linux Status: NEW Severity: major Priority: P1 Component: druntime Assignee: nobody puremagic.com Reporter: tomer weka.io it seems RCX is corrupt after the exception (which has finished handling and all), which AFAICT should hold the size of the temp stack size ``` import core.stdc.stdlib: alloca; void main() { void* p1 = alloca(10); writeln(p1); try { throw new Exception("foo"); } catch (Exception ex) { writeln(ex.msg); } void* p2 = alloca(10); // <<< SEGFAULT on 0x7ffffffff000 //rax 0x7fffffffd7b0 140737488345008 //rbx 0x3 3 //rcx 0x1ffffffffffffcf8 2305843009213693176 //rdx 0x7fffffffd870 140737488345200 //rsi 0x7ffffffff000 140737488351232 //rdi 0x7fffffffeff0 140737488351216 //rbp 0x7fffffffd900 0x7fffffffd900 //rsp 0x7fffffffd848 0x7fffffffd848 writeln(p2); } ``` --
Jul 04 2018