Implement -d inlines support for Mach-O.

Author: rjmansfield

src/macho.cc

@@ -606,8 +606,14 @@ class MachOObjectFile : public ObjectFile {
           ParseSymbols(sink->input_file().data(), nullptr, sink);
           break;
         }
+        case DataSource::kInlines: {
+          CheckNotObject("inlines", sink);
+          dwarf::File dwarf;
+          ReadDebugSectionsFromMachO(debug_file().file_data(), &dwarf, sink);
+          ReadDWARFInlines(dwarf, sink, true);
+          break;
+        }
         case DataSource::kArchiveMembers:
-        case DataSource::kInlines:
         default:
           THROW("Mach-O doesn't support this data source");
       }

tests/macho/inlines.test

@@ -0,0 +1,17 @@
+# Test that -d inlines works for Mach-O binaries
+#
+# Source: tests/testdata/macho/test_inlines.c
+#
+# To regenerate test binary and dSYM (requires macOS):
+#   mkdir -p /tmp/build && cd /tmp/build
+#   cp $BLOATY_ROOT/tests/testdata/macho/test_inlines.c .
+#   clang -g -O2 -c test_inlines.c -o test_inlines.o
+#   clang -g test_inlines.o -o 02-inlines
+#   # The dSYM bundle (02-inlines.dSYM) is created automatically by clang
+#   cp 02-inlines $BLOATY_ROOT/tests/testdata/macho/
+#   cp -r 02-inlines.dSYM $BLOATY_ROOT/tests/testdata/macho/
+#
+# RUN: %bloaty %S/../testdata/macho/02-inlines --debug-file=%S/../testdata/macho/02-inlines.dSYM/Contents/Resources/DWARF/02-inlines -d inlines --domain=vm | %FileCheck %s
+
+# CHECK: VM SIZE
+# CHECK: test_inlines.c:

tests/testdata/macho/02-inlines

@@ -0,0 +1,14 @@
+// Test file for inline function support in bloaty
+// This source generates the 02-inlines binary and dSYM for testing -d inlines
+
+static inline int add(int a, int b) { return a + b; }
+
+static inline int multiply(int a, int b) { return a * b; }
+
+int external_call(int x) { return add(x, 5) + multiply(x, 2); }
+
+int main(void) {
+  int x = 10;
+  int y = external_call(x);
+  return y;
+}