94382c8e56
This is a reland for 99e53cb4139eda491f97cb33ee42ea424d352200 with the appropriate test fixes. It's possible for __stack_chk_fail to be an alias when using CrossDSOCFI since it will make a jump table entry for this function and replace it with an alias. StackProtector can crash since it always expects this to be a regular function. Instead add the noreturn attribute to the call.
23 lines
653 B
LLVM
23 lines
653 B
LLVM
;; __stack_chk_fail should have the noreturn attr even if it is an alias
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; REQUIRES: x86-registered-target
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; RUN: opt -mtriple=x86_64-pc-linux-gnu %s -passes=stack-protector -S | FileCheck %s
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define hidden void @__stack_chk_fail_impl() {
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unreachable
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}
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@__stack_chk_fail = hidden alias void (), ptr @__stack_chk_fail_impl
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; CHECK-LABEL: @store_captures(
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; CHECK: CallStackCheckFailBlk:
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; CHECK-NEXT: call void @__stack_chk_fail() [[ATTRS:#.*]]
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define void @store_captures() sspstrong {
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entry:
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%a = alloca i32, align 4
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%j = alloca ptr, align 8
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store ptr %a, ptr %j, align 8
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ret void
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}
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; CHECK: attributes [[ATTRS]] = { noreturn }
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