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[packages/trusty/cirros-testvm.git] / cirros-testvm / src-cirros / buildroot-2015.05 / package / argp-standalone / 0002-isprint.patch

diff --git a/cirros-testvm/src-cirros/buildroot-2015.05/package/argp-standalone/0002-isprint.patch b/cirros-testvm/src-cirros/buildroot-2015.05/package/argp-standalone/0002-isprint.patch
new file mode 100644 (file)
index 0000000..9c08366
--- /dev/null
+++ b/cirros-testvm/src-cirros/buildroot-2015.05/package/argp-standalone/0002-isprint.patch
@@ -0,0 +1,45 @@
+Subject: restrict value range passed to isprint function
+
+According to C standards isprint argument shall be representable as an
+unsigned char or be equal to EOF, otherwise the behaviour is undefined.
+
+Passing arbitrary ints leads to segfault in nm program from elfutils.
+
+Restrict isprint argument range to values representable by unsigned char.
+
+Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
+---
+Index: b/argp.h
+===================================================================
+--- a/argp.h
++++ b/argp.h
+@@ -23,6 +23,7 @@
+ 
+ #include <stdio.h>
+ #include <ctype.h>
++#include <limits.h>
+ 
+ #define __need_error_t
+ #include <errno.h>
+@@ -577,7 +578,7 @@
+   else
+     {
+       int __key = __opt->key;
+-      return __key > 0 && isprint (__key);
++      return __key > 0 && __key <= UCHAR_MAX && isprint (__key);
+     }
+ }
+ 
+Index: b/argp-parse.c
+===================================================================
+--- a/argp-parse.c
++++ b/argp-parse.c
+@@ -1292,7 +1292,7 @@
+       int __key = __opt->key;
+       /* FIXME: whether or not a particular key implies a short option
+        * ought not to be locale dependent. */
+-      return __key > 0 && isprint (__key);
++      return __key > 0 && __key <= UCHAR_MAX && isprint (__key);
+     }
+ }
+