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-rw-r--r--host/lib/usrp/x300/cdecode.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/host/lib/usrp/x300/cdecode.c b/host/lib/usrp/x300/cdecode.c
index 424de6c6b..865423f3f 100644
--- a/host/lib/usrp/x300/cdecode.c
+++ b/host/lib/usrp/x300/cdecode.c
@@ -7,6 +7,12 @@ For details, see http://sourceforge.net/projects/libb64
#include "cdecode.h"
+#if defined(__GNUC__) && __GNUC__ >= 7
+# define UHD_FALLTHROUGH __attribute__((fallthrough));
+#else
+# define UHD_FALLTHROUGH
+#endif
+
int base64_decode_value(char value_in){
static const char decoding[] = {62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-2,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51};
static const char decoding_size = sizeof(decoding);
@@ -39,6 +45,7 @@ size_t base64_decode_block(const char* code_in, const size_t length_in, char* pl
fragment = (char)base64_decode_value(*codechar++);
} while ((signed char)fragment < 0);
*plainchar = (fragment & 0x03f) << 2;
+ UHD_FALLTHROUGH
case step_b:
do{
@@ -51,6 +58,7 @@ size_t base64_decode_block(const char* code_in, const size_t length_in, char* pl
} while ((signed char)fragment < 0);
*plainchar++ |= (fragment & 0x030) >> 4;
*plainchar = (fragment & 0x00f) << 4;
+ UHD_FALLTHROUGH
case step_c:
do{
if (codechar == code_in+length_in)
@@ -63,6 +71,7 @@ size_t base64_decode_block(const char* code_in, const size_t length_in, char* pl
} while ((signed char)fragment < 0);
*plainchar++ |= (fragment & 0x03c) >> 2;
*plainchar = (fragment & 0x003) << 6;
+ UHD_FALLTHROUGH
case step_d:
do{
if (codechar == code_in+length_in){