Date: Sun, 19 Nov 2017 23:56:17 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-toolchain@FreeBSD.org Subject: [Bug 223752] clang __attribute__((constructor)) gets wrong input parameters Message-ID: <bug-223752-29464-1a6l35ws3D@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-223752-29464@https.bugs.freebsd.org/bugzilla/> References: <bug-223752-29464@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D223752 --- Comment #7 from dstaesse <dimitri.staessens@ugent.be> --- (In reply to Mark Millard from comment #5) Good point, we only tried amd64 and i386.=20 This feature seems to be very sparsely documented, with some sources saying everything but void func(void) is undefined behaviour and others stating th= at it can have the same signature as the main() function. The GNU compiler documentation doesn't give details and clang doesn't document it at all. I'= ve seen other projects use this, though. The compiler doesn't seem to check the function signature at all, I've trie= d to set the constructor attribute to functions with all sorts of parameters and complaints. If this is undefined behaviour, do you know of a portable way to access argv from a shared library without passing it as a function parameter to some in= it call? --=20 You are receiving this mail because: You are the assignee for the bug.=
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