[PATCH] D121663: reland: [clang] Don't append the working directory to absolute paths
Keith Smiley via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Mon Mar 14 20:55:24 PDT 2022
keith created this revision.
keith added a reviewer: aprantl.
Herald added a project: All.
keith requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
This fixes a bug that happens when using -fdebug-prefix-map to remap an
absolute path to a relative path. Since the path was absolute before
remapping, it is safe to assume that concatenating the remapped working
directory would be wrong.
This was originally submitted as https://reviews.llvm.org/D113718, but
reverted because when testing with dwarf 6 enabled, the tests were too
strict.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D121663
Files:
clang/lib/CodeGen/CGDebugInfo.cpp
clang/test/CodeGen/debug-prefix-map.c
Index: clang/test/CodeGen/debug-prefix-map.c
===================================================================
--- clang/test/CodeGen/debug-prefix-map.c
+++ clang/test/CodeGen/debug-prefix-map.c
@@ -6,6 +6,9 @@
// RUN: %clang -g -fdebug-prefix-map=%p=%{fs-src-root}UNLIKELY_PATH%{fs-sep}empty -S -c %s -emit-llvm -o - | FileCheck %s
// RUN: %clang -g -ffile-prefix-map=%p=%{fs-src-root}UNLIKELY_PATH%{fs-sep}empty -S -c %s -emit-llvm -o - | FileCheck %s
+// RUN: %clang -g -fdebug-prefix-map=%p=./UNLIKELY_PATH/empty -S -c %s -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-REL
+// RUN: %clang -g -ffile-prefix-map=%p=./UNLIKELY_PATH/empty -S -c %s -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-REL
+
#include "Inputs/stdio.h"
int main(int argc, char **argv) {
@@ -40,3 +43,7 @@
// CHECK-COMPILATION-DIR: !DIFile(filename: "{{.*}}Inputs{{/|\\\\}}stdio.h", directory: "{{/|.:\\\\}}UNLIKELY_PATH{{/|\\\\}}empty")
// CHECK-COMPILATION-DIR-NOT: !DIFile(filename:
// CHECK-SYSROOT: !DICompileUnit({{.*}}sysroot: "{{/|.:\\\\}}UNLIKELY_PATH{{/|\\\\}}empty"
+
+// CHECK-REL: !DIFile(filename: "./UNLIKELY_PATH/empty{{/|\\\\}}{{.*}}",
+// CHECK-REL: !DIFile(filename: "./UNLIKELY_PATH/empty{{/|\\\\}}{{.*}}Inputs/stdio.h",
+// CHECK-REL-SAME: directory: ""
Index: clang/lib/CodeGen/CGDebugInfo.cpp
===================================================================
--- clang/lib/CodeGen/CGDebugInfo.cpp
+++ clang/lib/CodeGen/CGDebugInfo.cpp
@@ -444,7 +444,8 @@
File = FileBuf;
}
} else {
- Dir = CurDir;
+ if (!llvm::sys::path::is_absolute(FileName))
+ Dir = CurDir;
File = RemappedFile;
}
llvm::DIFile *F = DBuilder.createFile(File, Dir, CSInfo, Source);
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