[PATCH 4/4] libm/stdlib: Recover from realloc failure when shrinking
Keith Packard
keithp@keithp.com
Tue Aug 11 23:05:43 GMT 2020
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 <keithp@keithp.com>
---
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
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