[compiler-rt] r348187 - [gcov/Darwin] Ensure external symbols are exported when using an export list

[Vedant Kumar via llvm-commits]

Author: vedantk
Date: Mon Dec  3 12:53:58 2018
New Revision: 348187

URL: http://llvm.org/viewvc/llvm-project?rev=348187&view=rev
Log:
[gcov/Darwin] Ensure external symbols are exported when using an export list

Make sure that symbols needed to implement runtime support for gcov are
exported when using an export list on Darwin.

Without the clang driver exporting these symbols, the linker hides them,
resulting in tapi verification failures.

rdar://45944768

Differential Revision: https://reviews.llvm.org/D55151

Modified:
    compiler-rt/trunk/test/profile/instrprof-darwin-exports.c

Modified: compiler-rt/trunk/test/profile/instrprof-darwin-exports.c
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-darwin-exports.c?rev=348187&r1=348186&r2=348187&view=diff
==============================================================================
--- compiler-rt/trunk/test/profile/instrprof-darwin-exports.c (original)
+++ compiler-rt/trunk/test/profile/instrprof-darwin-exports.c Mon Dec  3 12:53:58 2018
@@ -8,6 +8,9 @@
 // RUN: %clang_profgen -Werror -fcoverage-mapping -Wl,-exported_symbols_list,%t.exports -o %t %s 2>&1 | tee -a %t.log
 // RUN: cat %t.log | count 0
 
+// RUN: %clang -Werror -Wl,-exported_symbols_list,%t.exports --coverage -o %t.gcov %s | tee -a %t.gcov.log
+// RUN: cat %t.gcov.log | count 0
+
 // The default set of weak external symbols should match the set of symbols
 // exported by clang. See Darwin::addProfileRTLibs.
 
@@ -16,4 +19,9 @@
 // RUN: nm -jUg %t > %t.clang.exports
 // RUN: diff %t.default.exports %t.clang.exports
 
+// RUN: %clang -Werror --coverage -o %t.gcov.default %s
+// RUN: nm -jUg %t.gcov | grep -v __mh_execute_header > %t.gcov.exports
+// RUN: nm -jUg %t.gcov.default | grep -v __mh_execute_header > %t.gcov.default.exports
+// RUN: diff %t.gcov.default.exports %t.gcov.exports
+
 int main() {}