diff options
Diffstat (limited to 'llvm/lib/MC/MCMachOStreamer.cpp')
| -rw-r--r-- | llvm/lib/MC/MCMachOStreamer.cpp | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/llvm/lib/MC/MCMachOStreamer.cpp b/llvm/lib/MC/MCMachOStreamer.cpp index 69995fa11d2..43e69605787 100644 --- a/llvm/lib/MC/MCMachOStreamer.cpp +++ b/llvm/lib/MC/MCMachOStreamer.cpp @@ -102,7 +102,8 @@ public: void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size, unsigned ByteAlignment) override; void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr, - uint64_t Size = 0, unsigned ByteAlignment = 0) override; + uint64_t Size = 0, unsigned ByteAlignment = 0, + SMLoc Loc = SMLoc()) override; void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size, unsigned ByteAlignment = 0) override; @@ -413,9 +414,18 @@ void MCMachOStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size, } void MCMachOStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol, - uint64_t Size, unsigned ByteAlignment) { - // On darwin all virtual sections have zerofill type. - assert(Section->isVirtualSection() && "Section does not have zerofill type!"); + uint64_t Size, unsigned ByteAlignment, + SMLoc Loc) { + // On darwin all virtual sections have zerofill type. Disallow the usage of + // .zerofill in non-virtual functions. If something similar is needed, use + // .space or .zero. + if (!Section->isVirtualSection()) { + getContext().reportError( + Loc, "The usage of .zerofill is restricted to sections of " + "ZEROFILL type. Use .zero or .space instead."); + return; // Early returning here shouldn't harm. EmitZeros should work on any + // section. + } PushSection(); SwitchSection(Section); |
