[LLD] Report errors occurred while parsing debug info as warnings.

Summary:
Extracted from D74773. Currently, errors happened while parsing
debug info are reported as errors. DebugInfoDWARF library treats such
errors as "Recoverable errors". This patch makes debug info errors
to be reported as warnings, to support DebugInfoDWARF approach.

Reviewers: ruiu, grimar, MaskRay, jhenderson, espindola

Reviewed By: MaskRay, jhenderson

Subscribers: emaste, aprantl, arichardson, arphaman, llvm-commits

Tags: #llvm, #debug-info, #lld

Differential Revision: https://reviews.llvm.org/D75234

3 files changed, 8 insertions, 8 deletions

diff --git a/lld/ELF/SyntheticSections.cpp b/lld/ELF/SyntheticSections.cpp
index 8fede22..5de3df8 100644
--- a/lld/ELF/SyntheticSections.cpp
+++ b/lld/ELF/SyntheticSections.cpp
@@ -2668,12 +2668,12 @@ readAddressAreas(DWARFContext &dwarf, InputSection *sec) {
   uint32_t cuIdx = 0;
   for (std::unique_ptr<DWARFUnit> &cu : dwarf.compile_units()) {
     if (Error e = cu->tryExtractDIEsIfNeeded(false)) {
-      error(toString(sec) + ": " + toString(std::move(e)));
+      warn(toString(sec) + ": " + toString(std::move(e)));
       return {};
     }
     Expected<DWARFAddressRangesVector> ranges = cu->collectAddressRanges();
     if (!ranges) {
-      error(toString(sec) + ": " + toString(ranges.takeError()));
+      warn(toString(sec) + ": " + toString(ranges.takeError()));
       return {};
     }
 
diff --git a/lld/test/ELF/gdb-index-invalid-ranges.s b/lld/test/ELF/gdb-index-invalid-ranges.s
index f146171..93e612e 100644
--- a/lld/test/ELF/gdb-index-invalid-ranges.s
+++ b/lld/test/ELF/gdb-index-invalid-ranges.s
@@ -1,12 +1,12 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
-# RUN: not ld.lld --gdb-index -e main %t.o -o /dev/null 2>&1 | FileCheck %s
+# RUN: ld.lld --gdb-index -e main %t.o -o /dev/null 2>&1 | FileCheck %s
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/gdb-index-invalid-ranges.obj.s -o %t2.o
 # RUN: llvm-ar rc %t.a %t.o
-# RUN: not ld.lld --gdb-index -e main %t2.o %t.a -o /dev/null 2>&1 | FileCheck --check-prefix=ARCHIVE %s
+# RUN: ld.lld --gdb-index -e main %t2.o %t.a -o /dev/null 2>&1 | FileCheck --check-prefix=ARCHIVE %s
 
-# CHECK: ld.lld: error: {{.*}}gdb-index-invalid-ranges.s.tmp.o:(.debug_info): decoding address ranges: invalid range list entry at offset 0x10
-# ARCHIVE: ld.lld: error: {{.*}}gdb-index-invalid-ranges.s.tmp.a(gdb-index-invalid-ranges.s.tmp.o):(.debug_info): decoding address ranges: invalid range list entry at offset 0x10
+# CHECK: ld.lld: warning: {{.*}}gdb-index-invalid-ranges.s.tmp.o:(.debug_info): decoding address ranges: invalid range list entry at offset 0x10
+# ARCHIVE: ld.lld: warning: {{.*}}gdb-index-invalid-ranges.s.tmp.a(gdb-index-invalid-ranges.s.tmp.o):(.debug_info): decoding address ranges: invalid range list entry at offset 0x10
 
 .section .text.foo1,"ax",@progbits
 .globl f1
diff --git a/lld/test/ELF/gdb-index-parse-fail.s b/lld/test/ELF/gdb-index-parse-fail.s
index 22ac5cc..2e814a4 100644
--- a/lld/test/ELF/gdb-index-parse-fail.s
+++ b/lld/test/ELF/gdb-index-parse-fail.s
@@ -1,8 +1,8 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o
-# RUN: not ld.lld --gdb-index %t1.o -o /dev/null 2>&1 | FileCheck %s
+# RUN: ld.lld --gdb-index %t1.o -o /dev/null 2>&1 | FileCheck %s
 
-# CHECK: error: {{.*}}:(.debug_info): invalid reference to or invalid content in .debug_str_offsets[.dwo]: insufficient space for 32 bit header prefix
+# CHECK: warning: {{.*}}:(.debug_info): invalid reference to or invalid content in .debug_str_offsets[.dwo]: insufficient space for 32 bit header prefix
 
 .section .debug_abbrev,"",@progbits
   .byte  1                           # Abbreviation Code