[PATCH 4/7] Fix int overflow

[Mikhail Maltsev <maltsevm@gmail.com>]

---
 libiberty/cp-demangle.c               | 3 ++-
 libiberty/testsuite/demangle-expected | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/libiberty/cp-demangle.c b/libiberty/cp-demangle.c
index 44a0a9b..befa6b6 100644
--- a/libiberty/cp-demangle.c
+++ b/libiberty/cp-demangle.c
@@ -103,6 +103,7 @@
 #include "config.h"
 #endif

+#include <limits.h>
 #include <stdio.h>

 #ifdef HAVE_STDLIB_H
@@ -1599,7 +1600,7 @@ d_source_name (struct d_info *di)
   struct demangle_component *ret;

   len = d_number (di);
-  if (len <= 0)
+  if (len <= 0 || len > INT_MAX)
     return NULL;
   ret = d_identifier (di, len);
   di->last_name = ret;
diff --git a/libiberty/testsuite/demangle-expected
b/libiberty/testsuite/demangle-expected
index 47ca8f5..9a8d3db 100644
--- a/libiberty/testsuite/demangle-expected
+++ b/libiberty/testsuite/demangle-expected
@@ -4096,6 +4096,10 @@ std::complex<int>::real[abi:cxx11]() const
 --format=gnu-v3
 Av32_f
 Av32_f
+# Check range when converting from long to int
+--format=gnu-v3
+_Z11111111111
+_Z11111111111
 #
 # Ada (GNAT) tests.
 #
-- 
1.8.3.1