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Tolerate invalid derived type. 

llvm-svn: 86269
This commit is contained in:
Devang Patel 2009-11-06 18:24:05 +00:00
parent 25ed5c2f42
commit 33e0c99d67
2 changed files with 17 additions and 0 deletions
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4
llvm/lib/Analysis/DebugInfo.cpp
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@ -409,6 +409,10 @@ uint64_t DIDerivedType::getOriginalTypeSize() const {
Tag == dwarf::DW_TAG_const_type || Tag == dwarf::DW_TAG_volatile_type ||
Tag == dwarf::DW_TAG_restrict_type) {
DIType BaseType = getTypeDerivedFrom();
// If this type is not derived from any type then take conservative
// approach.
if (BaseType.isNull())
return getSizeInBits();
if (BaseType.isDerivedType())
return DIDerivedType(BaseType.getNode()).getOriginalTypeSize();
else

13
llvm/test/DebugInfo/2009-11-06-InvalideDerivedType.ll Normal file
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@ -0,0 +1,13 @@
; RUN: llc %s -o /dev/null
%struct._t = type { i32 }
@s1 = common global %struct._t zeroinitializer, align 4 ; <%struct._t*> [#uses=0]
!llvm.dbg.gv = !{!0}
!0 = metadata !{i32 458804, i32 0, metadata !1, metadata !"s1", metadata !"s1", metadata !"s1", metadata !1, i32 3, metadata !2, i1 false, i1 true, %struct._t* @s1}; [DW_TAG_variable ]
!1 = metadata !{i32 458769, i32 0, i32 12, metadata !"t.c", metadata !"/tmp", metadata !"clang 1.1", i1 true, i1 false, metadata !"", i32 0}; [DW_TAG_compile_unit ]
!2 = metadata !{i32 458771, metadata !1, metadata !"_t", metadata !1, i32 1, i64 32, i64 32, i64 0, i32 0, null, metadata !3, i32 0}; [DW_TAG_structure_type ]
!3 = metadata !{metadata !4}
!4 = metadata !{i32 458765, metadata !1, metadata !"j", metadata !1, i32 2, i64 32, i64 32, i64 0, i32 0, metadata !5}; [DW_TAG_member ]
!5 = metadata !{i32 458790, metadata !1, metadata !"", null, i32 0, i64 0, i64 0, i64 0, i32 0, null}; [DW_TAG_const_type ]