From 059d3b3f345b2b0084b8f66f015b7709dedefc33 Mon Sep 17 00:00:00 2001 From: cynecx Date: Sat, 13 Nov 2021 00:37:30 +0100 Subject: [PATCH] rustc_codegen_gcc: error on unwinding inline asm --- compiler/rustc_codegen_gcc/src/asm.rs | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/compiler/rustc_codegen_gcc/src/asm.rs b/compiler/rustc_codegen_gcc/src/asm.rs index 7c3ed3c5ee9..c205a6ed4a2 100644 --- a/compiler/rustc_codegen_gcc/src/asm.rs +++ b/compiler/rustc_codegen_gcc/src/asm.rs @@ -118,7 +118,14 @@ impl<'a, 'gcc, 'tcx> AsmBuilderMethods<'tcx> for Builder<'a, 'gcc, 'tcx> { true } - fn codegen_inline_asm(&mut self, template: &[InlineAsmTemplatePiece], rust_operands: &[InlineAsmOperandRef<'tcx, Self>], options: InlineAsmOptions, _span: &[Span], _instance: Instance<'_>) { + fn codegen_inline_asm(&mut self, template: &[InlineAsmTemplatePiece], rust_operands: &[InlineAsmOperandRef<'tcx, Self>], options: InlineAsmOptions, span: &[Span], _instance: Instance<'_>, dest_catch_funclet: Option<(Self::BasicBlock, Self::BasicBlock, Option<&Self::Funclet>)>) { + if dest_catch_funclet.is_some() { + self.sess() + .struct_span_err(span[0], "GCC backend does not support unwinding from inline asm") + .emit(); + return; + } + let asm_arch = self.tcx.sess.asm_arch.unwrap(); let is_x86 = matches!(asm_arch, InlineAsmArch::X86 | InlineAsmArch::X86_64); let att_dialect = is_x86 && options.contains(InlineAsmOptions::ATT_SYNTAX);