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Code Issues Releases Activity

Check for NULL pointer in Print.write().

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Otherwise, trying to print(NULL) or write(NULL) could print a random
character.

http://code.google.com/p/arduino/issues/detail?id=941
This commit is contained in:
David A. Mellis 2012-06-03 07:48:32 -04:00
parent b3d724c33b
commit b787982eec
1 changed files with 4 additions and 1 deletions
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5
hardware/arduino/cores/arduino/Print.h
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@ -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 *);