Make zero-sized new standards-compliant

matthijskooijman · matthijskooijman · commit 6e0fb1ee25ef · 2020-09-17T20:01:29.000+02:00
This fixes part of arduino#287.
diff --git a/cores/arduino/new.cpp b/cores/arduino/new.cpp
@@ -23,6 +23,10 @@ namespace std {
 }
 
 void * operator new(size_t size) {
+  // Even zero-sized allocations should return a unique pointer, but
+  // malloc does not guarantee this
+  if (size == 0)
+    size = 1;
   return malloc(size);
 }
 void * operator new[](size_t size) {

Original file line number	Diff line number	Diff line change
`@@ -23,6 +23,10 @@ namespace std {`
`23`	`23`	`}`
`24`	`24`
`25`	`25`	`void * operator new(size_t size) {`
	`26`	`+ // Even zero-sized allocations should return a unique pointer, but`
	`27`	`+ // malloc does not guarantee this`
	`28`	`+ if (size == 0)`
	`29`	`+ size = 1;`
`26`	`30`	`return malloc(size);`
`27`	`31`	`}`
`28`	`32`	`void * operator new[](size_t size) {`