[lld] [llvm] [Symbolizer] Support for Missing Line Numbers. (PR #82240)

[via llvm-commits]

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+# REQUIRES: x86-registered-target
+
+# RUN: clang -O3 -gline-tables-only -T%S/linker-script.ld --target=x86_64-pc-linux %s -o %t.o
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero 0x5000f0 | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-FAIL-ACROSS-SEQ %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero 0x500110 | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-WITHIN-SEQ %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero 0x500110 0x500137 | FileCheck --strict-whitespace --match-full-lines --check-prefixes=APPROX-WITHIN-SEQ,NO-APPROX %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero --verbose 0x500110 | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-VERBOSE %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero --output-style=JSON 0x500110 | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-JSON %s
+
+# APPROX-FAIL-ACROSS-SEQ:add
+# APPROX-FAIL-ACROSS-SEQ-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}.{{[/|\]+}}definitions.h:0:49
+# APPROX-WITHIN-SEQ:main
+# APPROX-WITHIN-SEQ-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}.{{[/|\]+}}definitions.h:3:39 (approximate)
+# NO-APPROX:main
+# NO-APPROX-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:9:3
+
+# APPROX-VERBOSE:main
+# APPROX-VERBOSE-NEXT:  Filename: /tmp/test/.{{[/|\]}}definitions.h
+# APPROX-VERBOSE-NEXT:  Function start address: 0x500110
+# APPROX-VERBOSE-NEXT:  Line: 3
+# APPROX-VERBOSE-NEXT:  Column: 39
+# APPROX-VERBOSE-NEXT:  Approximate: 1
+
+# APPROX-JSON:[{"Address":"0x500110","ModuleName":"{{.*}}{{[/|\]+}}test{{[/|\]+}}tools{{[/|\]+}}llvm-symbolizer{{[/|\]+}}Output{{[/|\]+}}approximate-line-handcrafted.s.tmp.o","Symbol":[{"Approximate":true,"Column":39,"Discriminator":0,"FileName":"{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}.{{[/|\]+}}definitions.h","FunctionName":"main","Line":3,"StartAddress":"0x500110","StartFileName":"","StartLine":0}]}]
+
+## Generated from C Code
+##
+## // definitions.h
----------------
ampandey-1995 wrote:

Yes it requires linking and full executable is required.

https://github.com/llvm/llvm-project/pull/82240