Fix symbol visibility and add test coverage.

Fixes google#286.

Change-Id: I0707b10b948087ca40440c8311157bc6d3cbf87d
Reviewed-on: https://code-review.googlesource.com/c/re2/+/58010
Reviewed-by: Paul Wankadia <[email protected]>

Author: junyer

Makefile

@@ -203,7 +203,7 @@ obj/dbg/libre2.a: $(DOFILES)
 	$(AR) $(ARFLAGS) obj/dbg/libre2.a $(DOFILES)
 
 .PRECIOUS: obj/so/libre2.$(SOEXT)
-obj/so/libre2.$(SOEXT): $(SOFILES)
+obj/so/libre2.$(SOEXT): $(SOFILES) libre2.symbols libre2.symbols.darwin
 	@mkdir -p obj/so
 	$(MAKE_SHARED_LIBRARY) -o obj/so/libre2.$(SOEXTVER) $(SOFILES)
 	ln -sf libre2.$(SOEXTVER) $@

libre2.symbols

@@ -11,6 +11,9 @@
 		# re2::FilteredRE2*
 		_ZN3re211FilteredRE2*;
 		_ZNK3re211FilteredRE2*;
+		# re2::re2_internal*
+		_ZN3re212re2_internal*;
+		_ZNK3re212re2_internal*;
 	local:
 		*;
 };

libre2.symbols.darwin

@@ -10,3 +10,6 @@ __ZN3re2ls*
 # re2::FilteredRE2*
 __ZN3re211FilteredRE2*
 __ZNK3re211FilteredRE2*
+# re2::re2_internal*
+__ZN3re212re2_internal*
+__ZNK3re212re2_internal*

testinstall.cc

@@ -2,23 +2,26 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include <re2/re2.h>
-#include <re2/filtered_re2.h>
 #include <stdio.h>
+#include <re2/filtered_re2.h>
+#include <re2/re2.h>
+
+int main() {
+  re2::FilteredRE2 f;
+  int id;
+  f.Add("a.*b.*c", RE2::DefaultOptions, &id);
+  std::vector<std::string> v;
+  f.Compile(&v);
+  std::vector<int> ids;
+  f.FirstMatch("abbccc", ids);
 
-int main(void) {
-	re2::FilteredRE2 f;
-	int id;
-	f.Add("a.*b.*c", RE2::DefaultOptions, &id);
-	std::vector<std::string> v;
-	f.Compile(&v);
-	std::vector<int> ids;
-	f.FirstMatch("abbccc", ids);
+  int n;
+  if (RE2::FullMatch("axbyc", "a.*b.*c") &&
+      RE2::PartialMatch("foo123bar", "(\\d+)", &n) && n == 123) {
+    printf("PASS\n");
+    return 0;
+  }
 
-	if(RE2::FullMatch("axbyc", "a.*b.*c")) {
-		printf("PASS\n");
-		return 0;
-	}
-	printf("FAIL\n");
-	return 2;
+  printf("FAIL\n");
+  return 2;
 }