May 09, 2021 [Issue 21910] New: Thread local variables hang the program in -betterC | ||||
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https://issues.dlang.org/show_bug.cgi?id=21910 Issue ID: 21910 Summary: Thread local variables hang the program in -betterC Product: D Version: D2 Hardware: x86_64 OS: Windows Status: NEW Severity: critical Priority: P1 Component: dmd Assignee: nobody@puremagic.com Reporter: blatblatnik@gmail.com In 64bit windows builds, reading/writing thread local variables hangs the program. Forum post about this: https://forum.dlang.org/post/prnlbekbxhmwggdjyhii@forum.dlang.org Steps to reproduce: - Compiler: dmd 2.096.1 - Platform: Windows 10 64-bit ``` // test.d int a; // thread local extern(C) void main() { printf("before... "); a = 42; // The program hangs here. printf("after"); } ``` ``` $ dmd -betterC test.d; ./test.exe before... after $ dmd -betterC -m64 test.d; ./test.exe before... [program hangs for 3 seconds and exits without printing anything else] ``` -- |
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