nickdesaulniers marked an inline comment as done.
nickdesaulniers added inline comments.
================
Comment at: llvm/lib/Demangle/Demangle.cpp:49
bool llvm::nonMicrosoftDemangle(const char *MangledName, std::string &Result) {
+ if (!MangledName)
+ return false;
----------------
MaskRay wrote:
> Why is this change? The original contract is that `MangledName` must be
> non-null.
https://fosstodon.org/@llvm/110397650834821908
It's insidious; implicitly constructing a `std::string_view` from a `char*`
which is `nullptr` invokes a call to `strlen` upon construction, which
segfaults on my system. Therefor, all of the `nullptr` checks need to be
hoisted into the callers or stated another way exist at the boundary of `char*`
to `std::string_view` API boundaries (such as right here).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D151003/new/
https://reviews.llvm.org/D151003
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