During an exp-run for llvm 15 (see bug 265425), it turned out that
japanese/canna-lib failed to build with clang 15:
crxgram.c:421:33: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'char *' [-Wint-conversion]
alert("unknown operation %c", op);
^~
rkc.c:2741:38: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'unsigned char *' [-Wint-conversion]
nkanji = _RkwGetSimpleKanji(cxnum, dicname, cbuf, len,
^~~~~~~
This is mostly expected as canna-lib is very old K&R code, and clang 15
has -Wint-conversion as an error by default.
Pass -Wno-error=int-conversion in CCOPTIONS to make the warning
non-fatal. This should work for both clang and gcc.
PR: 268256
Approved by: portmgr (tcberner)
MFH: 2022Q4
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