Don't call exit from a runtime.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157450 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/runtime/libprofile/GCDAProfiling.c b/runtime/libprofile/GCDAProfiling.c
index 3a48bb282652907e6b88859cccdf3100559575ee..568b2b0faa4a539c3806e32ccd2e5e88455f0ff0 100644 (file)
--- a/runtime/libprofile/GCDAProfiling.c
+++ b/runtime/libprofile/GCDAProfiling.c
@@ -121,7 +121,7 @@ void llvm_gcda_start_file(const char *orig_filename) {
       fprintf(stderr, "LLVM profiling runtime: while opening '%s': ",
               cptr ? cptr + 1 : orig_filename);
       perror("");
-      exit(1);
+      return;
     }
   }
 
@@ -167,6 +167,7 @@ void llvm_gcda_emit_function(uint32_t ident, const char *function_name) {
 #ifdef DEBUG_GCDAPROFILING
   printf("llvmgcda: function id=%x\n", ident);
 #endif
+  if (!output_file) return;
 
   /* function tag */  
   fwrite("\0\0\0\1", 4, 1, output_file);
@@ -179,7 +180,9 @@ void llvm_gcda_emit_function(uint32_t ident, const char *function_name) {
 
 void llvm_gcda_emit_arcs(uint32_t num_counters, uint64_t *counters) {
   uint32_t i;
-  /* counter #1 (arcs) tag */
+
+  /* Counter #1 (arcs) tag */
+  if (!output_file) return;
   fwrite("\0\0\xa1\1", 4, 1, output_file);
   write_int32(num_counters * 2);
   for (i = 0; i < num_counters; ++i) {
@@ -196,6 +199,7 @@ void llvm_gcda_emit_arcs(uint32_t num_counters, uint64_t *counters) {
 
 void llvm_gcda_end_file() {
   /* Write out EOF record. */
+  if (!output_file) return;
   fwrite("\0\0\0\0\0\0\0\0", 8, 1, output_file);
   fclose(output_file);
   output_file = NULL;