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January 17, 2020 [Issue 14551] scope(failure) block causes bloat in nothrow functions | ||||
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https://issues.dlang.org/show_bug.cgi?id=14551 Witold Baryluk <witold.baryluk+d@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |witold.baryluk+d@gmail.com --- Comment #1 from Witold Baryluk <witold.baryluk+d@gmail.com> --- http://asm.dlang.org/ looks to be down. Would be nice to know actual example. At least in gdc, I did found that `scope(failure)` in `nothrow` functions (or even without manually indicating them as such) compiles to zero code, and is eliminated to nothing. However it doesn't warn about dead code, which IMHO it should. Example: ``` int i = 0; size_t f(string x) nothrow { scope(failure) i = 1; return 2 + x.length * x.length; } int main(string[] args) { return cast(int)f(args[1]); } ``` Compiles with `gdc-9 -fno-bounds-check -O2 -Wall` to: ``` 0000000000001230 <_Dmain>: 1230: 48 8b 46 10 mov 0x10(%rsi),%rax 1234: 48 0f af c0 imul %rax,%rax 1238: 48 83 c0 02 add $0x2,%rax 123c: c3 retq 123d: 0f 1f 00 nopl (%rax) ``` Wow. -- |
January 17, 2020 [Issue 14551] scope(failure) block causes bloat in nothrow functions | ||||
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https://issues.dlang.org/show_bug.cgi?id=14551 --- Comment #2 from Witold Baryluk <witold.baryluk+d@gmail.com> --- Also it looks to be possibly similar issue to https://issues.dlang.org/show_bug.cgi?id=13575 -- |
December 17, 2022 [Issue 14551] scope(failure) block causes bloat in nothrow functions | ||||
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https://issues.dlang.org/show_bug.cgi?id=14551 Iain Buclaw <ibuclaw@gdcproject.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P1 |P4 -- |
February 13, 2023 [Issue 14551] scope(failure) block causes bloat in nothrow functions | ||||
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https://issues.dlang.org/show_bug.cgi?id=14551 RazvanN <razvan.nitu1305@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |razvan.nitu1305@gmail.com Resolution|--- |WONTFIX --- Comment #3 from RazvanN <razvan.nitu1305@gmail.com> --- The original code is not reachable anymore so we cannot fix this without a test case. -- |
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