
<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">OK, I understand your question now.<div class=""><br class=""></div><div class="">I added the assert to the public overload of setFlags that has one parameter (just the flag value), not the one the constructor eventually calls.</div><div class=""><br class=""></div><div class="">void setFlags(unsigned F) { assert(F != Flags); setFlags(getParent(), F); }</div><div class=""><br class=""></div><div class=""><div class=""><div><blockquote type="cite" class=""><div class="">On Apr 29, 2016, at 12:13 PM, Richard Smith <<a href="mailto:richard@metafoo.co.uk" class="">richard@metafoo.co.uk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><div class="gmail_extra"><div class="gmail_quote">On Fri, Apr 29, 2016 at 12:12 PM, Akira Hatanaka via cfe-commits<span class="Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:cfe-commits@lists.llvm.org" target="_blank" class="">cfe-commits@lists.llvm.org</a>></span><span class="Apple-converted-space"> </span>wrote:<br class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class="">Scope’s constructor passes the parameter ScopeFlags to Scope::Init, which calls setFlags(Scope *parent, unsigned flags) and setFlags initializes Scope::Flags to the value passed to the constructor.</div></blockquote><div class=""><br class=""></div><div class="">Right, but you're making setFlags assert (F != Flags), at which point Flags is presumably uninitialized if the constructor didn't set it itself.</div><div class=""> </div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class=""><div class=""><div class="h5"><div class=""><div class=""><div class=""><blockquote type="cite" class=""><div class="">On Apr 29, 2016, at 11:36 AM, Richard Smith <<a href="mailto:richard@metafoo.co.uk" target="_blank" class="">richard@metafoo.co.uk</a>> wrote:</div><br class=""><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote">On Fri, Apr 29, 2016 at 11:07 AM, Akira Hatanaka via cfe-commits<span class="Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:cfe-commits@lists.llvm.org" target="_blank" class="">cfe-commits@lists.llvm.org</a>></span><span class="Apple-converted-space"> </span>wrote:<br class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class=""><div class="">If I add an assert to check (F != Flags) in setFlags, 2700+ out of 5000+ clang regression tests fail. I haven’t figured out which parts of clang are passing the same value to setFlags.</div></div></blockquote><div class=""><br class=""></div><div class="">What are you initializing Flags to in the constructor? </div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class=""><div class=""><div class=""><div class=""><blockquote type="cite" class=""><div class="">On Apr 28, 2016, at 7:38 PM, Richard Smith via cfe-commits <<a href="mailto:cfe-commits@lists.llvm.org" target="_blank" class="">cfe-commits@lists.llvm.org</a>> wrote:</div><br class=""><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote">On Thu, Apr 28, 2016 at 7:34 PM, Akira Hatanaka via cfe-commits<span class="Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:cfe-commits@lists.llvm.org" target="_blank" class="">cfe-commits@lists.llvm.org</a>></span><span class="Apple-converted-space"> </span>wrote:<br class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;">ahatanak added a comment.<br class=""><br class="">Thanks for the review. I committed the patch in r267956 and r267975.<br class=""><br class="">Do you think I should make setFlags(unsigned F) return early if F == Flags?</blockquote><div class=""><br class=""></div><div class="">I don't think that should happen in practice, so it doesn't seem worth checking.</div><div class=""><br class=""></div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><span class="">Repository:<br class=""> <span class="Apple-converted-space"> </span>rL LLVM<br class=""><br class=""><a href="http://reviews.llvm.org/D19175" rel="noreferrer" target="_blank" class="">http://reviews.llvm.org/D19175</a><br class=""><br class=""><br class=""><br class=""></span><div class=""><div class="">_______________________________________________<br class="">cfe-commits mailing list<br class=""><a href="mailto:cfe-commits@lists.llvm.org" target="_blank" class="">cfe-commits@lists.llvm.org</a><br class=""><a href="http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits" rel="noreferrer" target="_blank" class="">http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits</a><br class=""></div></div></blockquote></div><br class=""></div></div>_______________________________________________<br class="">cfe-commits mailing list<br class=""><a href="mailto:cfe-commits@lists.llvm.org" target="_blank" class="">cfe-commits@lists.llvm.org</a><br class=""><a href="http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits" target="_blank" class="">http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits</a><br class=""></div></blockquote></div><br class=""></div></div></div><br class="">_______________________________________________<br class="">cfe-commits mailing list<br class=""><a href="mailto:cfe-commits@lists.llvm.org" target="_blank" class="">cfe-commits@lists.llvm.org</a><br class=""><a href="http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits" rel="noreferrer" target="_blank" class="">http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits</a><br class=""><br class=""></blockquote></div><br class=""></div></div></div></blockquote></div><br class=""></div></div></div></div></div><br class="">_______________________________________________<br class="">cfe-commits mailing list<br class=""><a href="mailto:cfe-commits@lists.llvm.org" class="">cfe-commits@lists.llvm.org</a><br class=""><a href="http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits" rel="noreferrer" target="_blank" class="">http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits</a></blockquote></div></div></div></div></blockquote></div><br class=""></div></div></body></html>