fix PR3785, a valgrind error on test/CodeGen/ARM/pr3502.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66660 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMTargetAsmInfo.cpp b/lib/Target/ARM/ARMTargetAsmInfo.cpp
index d2965fe80f0e97a7bb09f8b0b96e07685d223939..4107dccd2a693e8ae2d08744809c9c7200cd8995 100644 (file)
--- a/lib/Target/ARM/ARMTargetAsmInfo.cpp
+++ b/lib/Target/ARM/ARMTargetAsmInfo.cpp
@@ -185,8 +185,12 @@ unsigned ARMTargetAsmInfo<BaseTAI>::getInlineAsmLength(const char *s) const {
             Str++;
           break;
         }
+      
+      if (*Str == 0) break;
+      
       // Ignore everything from comment char(s) to EOL
-      if (strncmp(Str, BaseTAI::CommentString, strlen(BaseTAI::CommentString))==-0)
+      if (strncmp(Str, BaseTAI::CommentString,
+                  strlen(BaseTAI::CommentString)) == 0)
         atInsnStart = false;
       // FIXME do something like the following for non-Darwin
       else if (*Str == '.' && Subtarget->isTargetDarwin()) {