[lld] 4225444 - [lld/mac] Add a test for -reexport_library + -dead_strip_dylibs

[Nico Weber via llvm-commits]

Author: Nico Weber
Date: 2021-06-07T13:44:58-04:00
New Revision: 422544414b0dd79fef2f10a051b22c47ae5a0af1

URL: https://github.com/llvm/llvm-project/commit/422544414b0dd79fef2f10a051b22c47ae5a0af1
DIFF: https://github.com/llvm/llvm-project/commit/422544414b0dd79fef2f10a051b22c47ae5a0af1.diff

LOG: [lld/mac] Add a test for -reexport_library + -dead_strip_dylibs

Our behavior here already matched ld64, now we have a test for it.

(ld64 even strips the library here if you also pass -needed_library bar.dylib.
That seems wrong to me, and lld honors needed_library in that case.)

Differential Revision: https://reviews.llvm.org/D103812

Added: 
    

Modified: 
    lld/test/MachO/dead-strip-dylibs.s

Removed: 
    


################################################################################
diff  --git a/lld/test/MachO/dead-strip-dylibs.s b/lld/test/MachO/dead-strip-dylibs.s
index 4ea5041c59d6c..ca3ad06a7493a 100644
--- a/lld/test/MachO/dead-strip-dylibs.s
+++ b/lld/test/MachO/dead-strip-dylibs.s
@@ -46,6 +46,14 @@
 # NOBARSTRIP: foo.dylib
 # NOBARSTRIP-NOT: bar-strip.dylib
 
+## Even libraries explicitly reexported with -reexport_library are stripped
+## if they are not referenced.
+# RUN: %lld -lSystem %t/main.o -o %t/main %t/foo_with_bar.dylib \
+# RUN:     -reexport_library %t/bar.dylib -dead_strip_dylibs
+# RUN: llvm-otool -L %t/main | FileCheck --check-prefix=NOBAR %s
+# RUN: llvm-otool -l %t/main | FileCheck --check-prefix=NOREEXPORT %s
+# NOREEXPORT-NOT: LC_REEXPORT_DYLIB
+
 ## But -needed_library and -needed-l win over -dead_strip_dylibs again.
 # RUN: %lld -lSystem %t/main.o -o %t/main %t/foo_with_bar.dylib \
 # RUN:     -needed_library %t/bar.dylib -dead_strip_dylibs