https://llvm.org/bugs/show_bug.cgi?id=23247
Bug ID: 23247
Summary: L-values produced by casts to volatile references
aren't tracked as volatile
Product: clang
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
static int global = 4;
int main() {
const_cast<volatile int &>(global) = 4;
}
IRGen marks this store volatile if the cast is a reinterpret_cast, but not if
it's a static_cast, const_cast, or C-style cast.
Storing to the dereferenced result of casting to a volatile pointer type seems
to work in all cases.
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