libsigrok.h: Fix multiple compiler warnings (-Wshift-overflow=2).

  ../include/libsigrok/libsigrok.h:653:19: warning: result of ‘1 << 31’ requires 33 bits to represent, but ‘int’ only has 32 bits [-Wshift-overflow=]
    SR_CONF_GET = (1 << 31),
                     ^~

[...]

diff --git a/include/libsigrok/libsigrok.h b/include/libsigrok/libsigrok.h
index cfc515d8177a4cd7e984f330dba773720de1adb9..e88360b68a9c6243531b5479a298b39efc9dd475 100644 (file)
--- a/include/libsigrok/libsigrok.h
+++ b/include/libsigrok/libsigrok.h
@@ -650,11 +650,11 @@ struct sr_key_info {
 /** Configuration capabilities. */
 enum sr_configcap {
        /** Value can be read. */
-       SR_CONF_GET = (1 << 31),
+       SR_CONF_GET = (1UL << 31),
        /** Value can be written. */
-       SR_CONF_SET = (1 << 30),
+       SR_CONF_SET = (1UL << 30),
        /** Possible values can be enumerated. */
-       SR_CONF_LIST = (1 << 29),
+       SR_CONF_LIST = (1UL << 29),
 };
 
 /** Configuration keys */