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LibC: Make malloc(0) return a non-null pointer

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Legally we could just return a null pointer, however returning a
pointer other than the null pointer is more compatible with
improperly written software that assumes that a null pointer means
allocation failure.
This commit is contained in:
Gunnar Beutner 2021-05-06 20:35:00 +02:00 committed by Andreas Kling
parent 0615a4d42a
commit 017da44ac2
Notes: sideshowbarker 2024-07-18 18:37:59 +09:00 
Author: https://github.com/gunnarbeutner
Commit: https://github.com/SerenityOS/serenity/commit/017da44ac2a
Pull-request: https://github.com/SerenityOS/serenity/pull/6901
1 changed files with 5 additions and 2 deletions
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7
Userland/Libraries/LibC/malloc.cpp
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@ -162,8 +162,11 @@ static void* malloc_impl(size_t size, CallerWillInitializeMemory caller_will_ini
if (s_log_malloc)
dbgln("LibC: malloc({})", size);
if (!size)
return nullptr;
if (!size) {
// Legally we could just return a null pointer here, but this is more
// compatible with existing software.
size = 1;
}
g_malloc_stats.number_of_malloc_calls++;