don't use strtoul on a non-null-terminated string.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66732 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Stmt.cpp b/lib/AST/Stmt.cpp
index cc120a6..f68ed0a 100644
--- a/lib/AST/Stmt.cpp
+++ b/lib/AST/Stmt.cpp
@@ -274,9 +274,11 @@
if (isdigit(EscapedChar)) {
// %n - Assembler operand n
- char *End;
- unsigned long N = strtoul(CurPtr-1, &End, 10);
- assert(End != CurPtr-1 && "We know that EscapedChar is a digit!");
+ unsigned N = 0;
+
+ --CurPtr;
+ while (CurPtr != StrEnd && isdigit(*CurPtr))
+ N = N*10+((*CurPtr++)-'0');
unsigned NumOperands =
getNumOutputs() + getNumPlusOperands() + getNumInputs();
@@ -285,7 +287,6 @@
return diag::err_asm_invalid_operand_number;
}
- CurPtr = End;
Pieces.push_back(AsmStringPiece(N, Modifier));
continue;
}