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Add an artificial line-0 debug location when the compiler emits a call to
__stack_chk_fail(). This avoids a compiler crash. Differential Revision: http://reviews.llvm.org/D21818 llvm-svn: 274263
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@ -24,6 +24,7 @@
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#include "llvm/IR/Attributes.h"
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#include "llvm/IR/Attributes.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/DebugInfo.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/GlobalValue.h"
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#include "llvm/IR/GlobalValue.h"
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@ -447,6 +448,7 @@ BasicBlock *StackProtector::CreateFailBB() {
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LLVMContext &Context = F->getContext();
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LLVMContext &Context = F->getContext();
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BasicBlock *FailBB = BasicBlock::Create(Context, "CallStackCheckFailBlk", F);
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BasicBlock *FailBB = BasicBlock::Create(Context, "CallStackCheckFailBlk", F);
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IRBuilder<> B(FailBB);
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IRBuilder<> B(FailBB);
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B.SetCurrentDebugLocation(DebugLoc::get(0, 0, F->getSubprogram()));
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if (Trip.isOSOpenBSD()) {
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if (Trip.isOSOpenBSD()) {
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Constant *StackChkFail =
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Constant *StackChkFail =
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M->getOrInsertFunction("__stack_smash_handler",
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M->getOrInsertFunction("__stack_smash_handler",
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@ -3880,6 +3880,17 @@ entry:
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ret i32 %call
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ret i32 %call
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}
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}
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define void @__stack_chk_fail() #1 !dbg !6 {
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entry:
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ret void
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}
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define void @test32() #1 !dbg !7 {
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entry:
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%0 = alloca [5 x i8], align 1
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ret void
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}
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declare double @testi_aux()
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declare double @testi_aux()
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declare i8* @strcpy(i8*, i8*)
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declare i8* @strcpy(i8*, i8*)
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declare i32 @printf(i8*, ...)
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declare i32 @printf(i8*, ...)
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@ -3899,3 +3910,16 @@ attributes #2 = { sspreq }
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attributes #3 = { ssp "stack-protector-buffer-size"="33" }
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attributes #3 = { ssp "stack-protector-buffer-size"="33" }
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attributes #4 = { ssp "stack-protector-buffer-size"="5" }
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attributes #4 = { ssp "stack-protector-buffer-size"="5" }
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attributes #5 = { ssp "stack-protector-buffer-size"="6" }
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attributes #5 = { ssp "stack-protector-buffer-size"="6" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
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!1 = !DIFile(filename: "test.c", directory: "/tmp")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{!"clang version x.y.z"}
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!6 = distinct !DISubprogram(name: "__stack_chk_fail", scope: !1, unit: !0)
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!7 = distinct !DISubprogram(name: "foo", scope: !1, unit: !0)
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