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Fix all optimization-inhibiting integer-to-pointer casts

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Following from PR #2481, we replace all integer-to-pointer casts [which
hide pointer provenance information (and thus inhibit
optimizations)](https://clang.llvm.org/extra/clang-tidy/checks/performance/no-int-to-ptr.html)
with equivalent operations that preserve this information. I have
enabled the corresponding clang-tidy check in our static analysis CI so
that we do not get bitten by this again in the future.
This commit is contained in:
Kevin Svetlitski
2023-07-24 10:33:36 -07:00
committed by Qi Wang
parent 4827bb17bd
commit 3e82f357bb
27 changed files with 116 additions and 66 deletions
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4
src/jemalloc.c
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@@ -3446,7 +3446,7 @@ do_rallocx(void *ptr, size_t size, int flags, bool is_realloc) {
if (config_fill && unlikely(opt_junk_alloc) && usize > old_usize
&& !zero) {
size_t excess_len = usize - old_usize;
void *excess_start = (void *)((uintptr_t)p + old_usize);
void *excess_start = (void *)((byte_t *)p + old_usize);
junk_alloc_callback(excess_start, excess_len);
}
@@ -3716,7 +3716,7 @@ je_xallocx(void *ptr, size_t size, size_t extra, int flags) {
if (config_fill && unlikely(opt_junk_alloc) && usize > old_usize &&
!zero) {
size_t excess_len = usize - old_usize;
void *excess_start = (void *)((uintptr_t)ptr + old_usize);
void *excess_start = (void *)((byte_t *)ptr + old_usize);
junk_alloc_callback(excess_start, excess_len);
}
label_not_resized: