| // This test checks that reusing FileManager produces deterministic results on case-insensitive filesystems. |
| |
| // RUN: rm -rf %t |
| // RUN: split-file %s %t |
| |
| //--- dir1/arm/lower.h |
| //--- dir2/ARM/upper.h |
| //--- t1.c |
| #include "upper.h" |
| //--- t2.c |
| #include "arm/lower.h" |
| |
| //--- cdb.json.template |
| [{ |
| "directory": "DIR", |
| "command": "clang -fsyntax-only DIR/t1.c -I DIR/dir2/ARM -I DIR/dir1", |
| "file": "DIR/t1.c" |
| },{ |
| "directory": "DIR", |
| "command": "clang -fsyntax-only DIR/t2.c -I DIR/dir2 -I DIR/dir1", |
| "file": "DIR/t2.c" |
| }] |
| |
| //--- cdb-rev.json.template |
| [{ |
| "directory": "DIR", |
| "command": "clang -fsyntax-only DIR/t2.c -I DIR/dir2 -I DIR/dir1", |
| "file": "DIR/t2.c" |
| },{ |
| "directory": "DIR", |
| "command": "clang -fsyntax-only DIR/t1.c -I DIR/dir2/ARM -I DIR/dir1", |
| "file": "DIR/t1.c" |
| }] |
| |
| // RUN: sed -e "s|DIR|%/t|g" %t/cdb.json.template > %t/cdb.json |
| // RUN: sed -e "s|DIR|%/t|g" %t/cdb-rev.json.template > %t/cdb-rev.json |
| |
| // RUN: clang-scan-deps -compilation-database=%t/cdb.json -format make -j 1 | sed 's:\\\\\?:/:g' | FileCheck %s |
| |
| // In the reversed case, Clang starts by scanning "t2.c". When looking up the "arm/lower.h" header, |
| // the string is appended to "DIR/dir2". That file ("DIR/dir2/arm/lower.h") doesn't exist, but when |
| // learning so, the FileManager stats and caches the parent directory ("DIR/dir2/arm"), using the |
| // UID as the key. |
| // When scanning "t1.c" later on, the "DIR/dir2/ARM" search directory is assigned the **same** |
| // directory entry (with lowercase "arm"), since they share the UID on case-insensitive filesystems. |
| // To preserve the correct case throughout the compiler for any file within that directory, it's |
| // important to use the spelling actually used, not just the cached one. |
| // RUN: clang-scan-deps -compilation-database=%t/cdb-rev.json -format make -j 1 | sed 's:\\\\\?:/:g' | FileCheck %s |
| |
| // CHECK: ARM/upper.h |