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diff --git a/test/tools/dsymutil/Inputs/basic1.c b/test/tools/dsymutil/Inputs/basic1.c
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+/* This is the main file used to produce the basic* objects that are
+ used for the dsymutil tests.
+
+ These are compiled in a couple of different ways (always on a
+ Darwin system):
+ Basic compilation:
+ for FILE in basic1.c basic2.c basic3.c; do
+ clang -g -c $FILE -o ${FILE%.c}.macho.x86_64.o
+ done
+ clang basic1.macho.x86_64.o basic2.macho.x86_64.o basic3.macho.x86_64.o -o basic.macho.x86_64 -Wl,-dead_strip
+
+ LTO compilation:
+ for FILE in basic1.c basic2.c basic3.c; do
+ clang -g -c -flto $FILE -o ${FILE%.c}-lto.o
+ done
+ clang basic1-lto.o basic2-lto.o basic3-lto.o -o basic-lto.macho.x86_64 -Wl,-object_path_lto,$PWD/basic-lto.macho.x86_64.o -Wl,-dead_strip
+ rm basic1-lto.o basic2-lto.o basic3-lto.o
+
+ Archive compilation (after basic compilation):
+ ar -q libbasic.a basic2.macho.x86_64.o basic3.macho.x86_64.o
+ clang basic1.macho.x86_64.o -lbasic -o basic-archive.macho.x86_64 -Wl,-dead_strip -L.
+*/
+
+int foo(int);
+
+int main(int argc, const char *argv[]) {
+ return foo(argc);
+}