[PATCH 4/4] libm/stdlib: Recover from realloc failure when shrinking

When shrinking and the new allocation fails, just leave things as they
were and keep going. Applications may well expect shrinking
reallocations to always succeed.

Signed-off-by: Keith Packard <[email protected]>
---
 newlib/libc/stdlib/nano-mallocr.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/newlib/libc/stdlib/nano-mallocr.c b/newlib/libc/stdlib/nano-mallocr.c
index 83234c618..452d1448a 100644
--- a/newlib/libc/stdlib/nano-mallocr.c
+++ b/newlib/libc/stdlib/nano-mallocr.c
@@ -481,7 +481,12 @@ void * nano_realloc(RARG void * ptr, malloc_size_t size)
       return ptr;
 
     mem = nano_malloc(RCALL size);
-    if (mem != NULL)
+    if (mem == NULL)
+    {
+	if (size <= old_size)
+	    return ptr;
+    }
+    else
     {
 	if (size > old_size)
 	    size = old_size;
-- 
2.28.0