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If FE forgot to provide a file name (usually it uses "stdin" as name in such situation) then make one up to ensure that debug info is not malformed.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114119 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2010-09-16 20:57:49 +00:00
parent 4e282decf3
commit 1905a18abc
2 changed files with 35 additions and 0 deletions
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4
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -1750,6 +1750,10 @@ unsigned DwarfDebug::GetOrCreateSourceID(StringRef DirName, StringRef FileName){
unsigned DId;
assert (DirName.empty() == false && "Invalid directory name!");
// If FE did not provide a file name, then assume stdin.
if (FileName.empty())
return GetOrCreateSourceID(DirName, "<stdin>");
StringMap<unsigned>::iterator DI = DirectoryIdMap.find(DirName);
if (DI != DirectoryIdMap.end()) {
DId = DI->getValue();

31
test/DebugInfo/2010-09-16-EmptyFilename.ll Normal file
View File

@ -0,0 +1,31 @@
; RUN: llc -O0 < %s - | FileCheck %s
; Radar 8286101
; CHECK: File size
; CHECK-NEXT: stdin
; CHECK-NEXT: Directory
define i32 @foo() nounwind ssp {
entry:
ret i32 42, !dbg !8
}
define i32 @bar() nounwind ssp {
entry:
ret i32 21, !dbg !10
}
!llvm.dbg.sp = !{!0, !6}
!0 = metadata !{i32 524334, i32 0, metadata !1, metadata !"foo", metadata !"foo", metadata !"foo", metadata !1, i32 53, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 false, i32 ()* @foo} ; [ DW_TAG_subprogram ]
!1 = metadata !{i32 524329, metadata !"", metadata !"/private/tmp", metadata !2} ; [ DW_TAG_file_type ]
!2 = metadata !{i32 524305, i32 0, i32 12, metadata !"bug.c", metadata !"/private/tmp", metadata !"clang version 2.9 (trunk 114084)", i1 true, i1 false, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
!3 = metadata !{i32 524309, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !4, i32 0, null} ; [ DW_TAG_subroutine_type ]
!4 = metadata !{metadata !5}
!5 = metadata !{i32 524324, metadata !1, metadata !"int", metadata !1, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
!6 = metadata !{i32 524334, i32 0, metadata !7, metadata !"bar", metadata !"bar", metadata !"bar", metadata !7, i32 4, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 false, i32 ()* @bar} ; [ DW_TAG_subprogram ]
!7 = metadata !{i32 524329, metadata !"bug.c", metadata !"/private/tmp", metadata !2} ; [ DW_TAG_file_type ]
!8 = metadata !{i32 53, i32 13, metadata !9, null}
!9 = metadata !{i32 524299, metadata !0, i32 53, i32 11, metadata !1, i32 0} ; [ DW_TAG_lexical_block ]
!10 = metadata !{i32 4, i32 13, metadata !11, null}
!11 = metadata !{i32 524299, metadata !12, i32 4, i32 13, metadata !7, i32 2} ; [ DW_TAG_lexical_block ]
!12 = metadata !{i32 524299, metadata !6, i32 4, i32 11, metadata !7, i32 1} ; [ DW_TAG_lexical_block ]