https://llvm.org/bugs/show_bug.cgi?id=31692
Bug ID: 31692
Summary: After r291388: Assertion failed: (it !=
OpaqueRValues.end() && "no mapping for opaque
value!"), function getOpaqueRValueMapping, file
tools/clang/lib/CodeGen/CodeGenFunction.h, line 2008.
Product: new-bugs
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: dimi...@andric.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
After r291388 (bug 23135: Don't instantiate constexpr functions referenced in
unevaluated operands where possible), bootstrapping clang with clang itself
results in an assertion while compiling lib/MC/MCParser/AsmParser.cpp:
Assertion failed: (it != OpaqueRValues.end() && "no mapping for opaque
value!"), function getOpaqueRValueMapping, file
tools/clang/lib/CodeGen/CodeGenFunction.h, line 2008.
Abort trap
Minimized test case:
========================================================================
// clang -cc1 -triple x86_64 -S -std=c++11 testcase.cpp
template <bool> struct x0;
template <int> struct x1 { static int x2; };
template <class x3> struct x4 : x1<__is_constructible(x3)> {};
template <bool> struct x5;
template <class... x3> struct x6 {
template <bool x7, typename x0<x5<x7 && x4<x3>::x2...>::x2>::x8> x6();
};
template <typename x9> struct x10 : x9 {};
struct x11 {
struct x12 {
int x13 = 0;
} x14;
x10<x6<x12>> x15;
void x16();
};
void x11::x16() {
if (x14.x13)
;
}
========================================================================
Bisection shows this assertion to have been introduced by r291388.
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