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Silence most -Wzero-as-null-pointer-constant diagnostics

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Replace 0 by NULL and {0} by {}.

Omit a few cases that aren't so trivial to fix.

Link: <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117059>
Link: <https://software.codidact.com/posts/292718/292759#answer-292759>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
This commit is contained in:
Alejandro Colomar
2024-11-16 16:51:31 +01:00
committed by Adhemerval Zanella
parent 83d4b42ded
commit 53fcdf5f74
97 changed files with 263 additions and 262 deletions
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14
malloc/arena.c
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@@ -389,7 +389,7 @@ alloc_new_heap (size_t size, size_t top_pad, size_t pagesize,
else if (size + top_pad <= max_size)
size += top_pad;
else if (size > max_size)
return 0;
return NULL;
else
size = max_size;
size = ALIGN_UP (size, pagesize);
@@ -411,7 +411,7 @@ alloc_new_heap (size_t size, size_t top_pad, size_t pagesize,
}
if (p2 == MAP_FAILED)
{
p1 = (char *) MMAP (0, max_size << 1, PROT_NONE, mmap_flags);
p1 = (char *) MMAP (NULL, max_size << 1, PROT_NONE, mmap_flags);
if (p1 != MAP_FAILED)
{
p2 = (char *) (((uintptr_t) p1 + (max_size - 1))
@@ -427,21 +427,21 @@ alloc_new_heap (size_t size, size_t top_pad, size_t pagesize,
{
/* Try to take the chance that an allocation of only max_size
is already aligned. */
p2 = (char *) MMAP (0, max_size, PROT_NONE, mmap_flags);
p2 = (char *) MMAP (NULL, max_size, PROT_NONE, mmap_flags);
if (p2 == MAP_FAILED)
return 0;
return NULL;
if ((unsigned long) p2 & (max_size - 1))
{
__munmap (p2, max_size);
return 0;
return NULL;
}
}
}
if (__mprotect (p2, size, mtag_mmap_flags | PROT_READ | PROT_WRITE) != 0)
{
__munmap (p2, max_size);
return 0;
return NULL;
}
/* Only considere the actual usable range. */
@@ -644,7 +644,7 @@ _int_new_arena (size_t size)
to deal with the large request via mmap_chunk(). */
h = new_heap (sizeof (*h) + sizeof (*a) + MALLOC_ALIGNMENT, mp_.top_pad);
if (!h)
return 0;
return NULL;
}
a = h->ar_ptr = (mstate) (h + 1);
malloc_init_state (a);