Bug 22322 – ImportC: struct with floating point members causes problems with generated toHash() function

The following C code fails to compile. struct S { float f; }; struct S2 { double d; }; Error: `tupleof` is not a member of `const(S)` Error: invalid `foreach` aggregate `_error_` Error: `tupleof` is not a member of `const(S2)` Error: invalid `foreach` aggregate `_error_` Note that the error messages do not have source location either!

Could you try with -betterC and see if the error message remains?

(In reply to mhh from comment #1) > Could you try with -betterC and see if the error message remains? The error goes away with -betterC.

Ok, if this is with dmd master it's because recently it was made impossible to use .tupleof inside C code (long story...), however this seems to have disabled use of .tupleof when the C struct is being consumed inside D code as well. -betterC gets rid of the error which suggests to me that it's something to do with TypeInfo.

(In reply to mhh from comment #3) > Ok, if this is with dmd master it's because recently it was made impossible > to use .tupleof inside C code (long story...), however this seems to have > disabled use of .tupleof when the C struct is being consumed inside D code > as well. > > -betterC gets rid of the error which suggests to me that it's something to > do with TypeInfo. It’s on the latest stable branch, commit 714c34ef8629c23751d7071d7dcc1d697708ad13 I just tried with master branch, commit 576ab617f5e84b8782752c1ebf5f5fd4beb1dac0 and the error is not there.

https://github.com/dlang/dmd/pull/13066 targeted stable

It sounds like it's trying to build the default struct member functions for it.

The problem is in the buildXtoHash() function in clone.d. It adds .tupleof properties, whereas C files don't have such properties.

@WalterBright created dlang/dmd pull request #13091 "fix Issue 22322 - ImportC: struct with floating point members causes …" fixing this issue: - fix Issue 22322 - ImportC: struct with floating point members causes problems with generated toHash() function https://github.com/dlang/dmd/pull/13091

dlang/dmd pull request #13091 "fix Issue 22322 - ImportC: struct with floating point members causes …" was merged into stable: - b766b590098ef1a872c7f9222d49434d25086882 by Walter Bright: fix Issue 22322 - ImportC: struct with floating point members causes problems with generated toHash() function https://github.com/dlang/dmd/pull/13091

dlang/dmd pull request #13108 "merge stable" was merged into master: - efe4417cff053fe070061623f747c3018ccb88d4 by Walter Bright: fix Issue 22322 - ImportC: struct with floating point members causes problems with generated toHash() function (#13091) https://github.com/dlang/dmd/pull/13108