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eboasson avatar eboasson commented on June 5, 2024

Hi @vivekpandey02, a tiny patch to https://github.com/ADLINK-IST/idlpp-cxx solves the problem, at least in this particular case:

diff --git a/idlpp/ppresources/ospli/src/tools/idlpp/code/idl_genLiteISOCxxCopyin.c b/idlpp/ppresources/ospli/src/tools/idlpp/code/idl_genLiteISOCxxCopyin.c
index 0e0cb57..f7ef804 100644
--- a/idlpp/ppresources/ospli/src/tools/idlpp/code/idl_genLiteISOCxxCopyin.c
+++ b/idlpp/ppresources/ospli/src/tools/idlpp/code/idl_genLiteISOCxxCopyin.c
@@ -1615,7 +1615,7 @@ idl_unionCaseSequence(
              idl_seqAllocBuffer(idl_typeSeq(typeSpec), "length0", buf, sizeof(buf)));
         idl_seqLoopCopy (seqTypeSpec, "*src", "dest0", 1, 2, userData);
         idl_fileOutPrintf (idl_fileCur(), "        to->_u.%s._length = length0;\n", memberName);
-        idl_fileOutPrintf (idl_fileCur(), "        to->_u.%s._buffer = (uint8_t *)dest0;\n", memberName);
+        idl_fileOutPrintf (idl_fileCur(), "        to->_u.%s._buffer = dest0;\n", memberName);
     }
     idl_fileOutPrintf (idl_fileCur(), "    }\n");

A problem here is that I never bothered to get to know that code very well as it was always meant to be an interim hack until the new IDL compiler that natively supports C++ comes online (which should be really soon, it is starting to function). The thing that bothers me is that on the one hand it tries hard to make sure dest0 has the correct type, while on the other hand it explicitly casts it to something else. Surely there must have been a reason for that cast ... so I am worried this breaks something else.

Perhaps @e-hndrks could see if this change is actually the correct fix. In the mean time, perhaps you could give it a try?

from cyclonedds-cxx.

vivekpandey02 avatar vivekpandey02 commented on June 5, 2024

Dear Erik,

Thank you for your solution.

I have tested my example code with your solution. It is compiling now without any error.

With best regards,
Vivek

from cyclonedds-cxx.

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