[Sanitizer] Enable POSIX regex api on FreeBSD.

Reviewers: krytarowski

Reviewed By: krytarowski

Differential Revision: https://reviews.llvm.org/D56009

M    lib/sanitizer_common/sanitizer_common_interceptors.inc
M    lib/sanitizer_common/sanitizer_platform_interceptors.h
M    lib/sanitizer_common/sanitizer_platform_limits_freebsd.cc
M    lib/sanitizer_common/sanitizer_platform_limits_freebsd.h
D    test/sanitizer_common/TestCases/NetBSD/regex.cc
A  + test/sanitizer_common/TestCases/Posix/regex.cc


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@350002 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 71 insertions, 0 deletions

diff --git a/test/sanitizer_common/TestCases/Posix/regex.cc b/test/sanitizer_common/TestCases/Posix/regex.cc
new file mode 100644
index 000000000..a6f19f39b
--- /dev/null
+++ b/test/sanitizer_common/TestCases/Posix/regex.cc
@@ -0,0 +1,71 @@
+// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck %s
+//
+// UNSUPPORTED: linux, darwin, solaris
+
+#include <assert.h>
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifndef __arraycount
+#define __arraycount(a) ((sizeof(a) / sizeof(a[0])))
+#endif
+
+void test_matched(const regex_t *preg, const char *string) {
+  int rv = regexec(preg, string, 0, NULL, 0);
+  if (!rv)
+    printf("%s: matched\n", string);
+  else if (rv == REG_NOMATCH)
+    printf("%s: not-matched\n", string);
+  else
+    abort();
+}
+
+void test_print_matches(const regex_t *preg, const char *string) {
+  regmatch_t rm[10];
+  int rv = regexec(preg, string, __arraycount(rm), rm, 0);
+  if (!rv) {
+    for (size_t i = 0; i < __arraycount(rm); i++) {
+      // This condition shall be simplified, but verify that the data fields
+      // are accessible.
+      if (rm[i].rm_so == -1 && rm[i].rm_eo == -1)
+        continue;
+      printf("matched[%zu]='%.*s'\n", i, (int)(rm[i].rm_eo - rm[i].rm_so),
+             string + rm[i].rm_so);
+    }
+  } else if (rv == REG_NOMATCH)
+    printf("%s: not-matched\n", string);
+  else
+    abort();
+}
+
+int main(void) {
+  printf("regex\n");
+
+  regex_t regex;
+  int rv = regcomp(&regex, "[[:upper:]]\\([[:upper:]]\\)", 0);
+  assert(!rv);
+
+  test_matched(&regex, "abc");
+  test_matched(&regex, "ABC");
+
+  test_print_matches(&regex, "ABC");
+
+  regfree(&regex);
+
+  rv = regcomp(&regex, "[[:upp:]]", 0);
+  assert(rv);
+
+  char errbuf[1024];
+  regerror(rv, &regex, errbuf, sizeof errbuf);
+  printf("error: %s\n", errbuf);
+
+  // CHECK: regex
+  // CHECK: abc: not-matched
+  // CHECK: ABC: matched
+  // CHECK: matched[0]='AB'
+  // CHECK: matched[1]='B'
+  // CHECK: error:{{.*}}
+
+  return 0;
+}