diff options
| -rwxr-xr-x | cores/arduino/Print.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/cores/arduino/Print.h b/cores/arduino/Print.h index 1af6b72..dc76150 100755 --- a/cores/arduino/Print.h +++ b/cores/arduino/Print.h @@ -46,7 +46,10 @@ class Print void clearWriteError() { setWriteError(0); } virtual size_t write(uint8_t) = 0; - size_t write(const char *str) { return write((const uint8_t *)str, strlen(str)); } + size_t write(const char *str) { + if (str == NULL) return 0; + return write((const uint8_t *)str, strlen(str)); + } virtual size_t write(const uint8_t *buffer, size_t size); size_t print(const __FlashStringHelper *); |