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| author | Alexander Korotkov | 2021-02-12 14:14:33 +0000 |
|---|---|---|
| committer | Alexander Korotkov | 2021-02-12 14:23:35 +0000 |
| commit | 993bdb9f935a751935a03c80d30857150ba2b645 (patch) | |
| tree | 5744c7b3abd6a42a74abccb574595ff61f251d5e /src/port | |
| parent | c8b21b0378141948a2dc0ddde6f57407321787ea (diff) | |
pg_attribute_no_sanitize_alignment() macro
Modern gcc and clang compilers offer alignment sanitizers, which help to detect
pointer misalignment. However, our codebase already contains x86-specific
crc32 computation code, which uses unalignment access. Thankfully, those
compilers also support the attribute, which disables alignment sanitizers at
the function level. This commit adds pg_attribute_no_sanitize_alignment(),
which wraps this attribute, and applies it to pg_comp_crc32c_sse42() function.
Discussion: https://postgr.es/m/CAPpHfdsne3%3DT%3DfMNU45PtxdhSL_J2PjLTeS8rwKnJzUR4YNd4w%40mail.gmail.com
Discussion: https://postgr.es/m/475514.1612745257%40sss.pgh.pa.us
Author: Alexander Korotkov, revised by Tom Lane
Reviewed-by: Tom Lane
Diffstat (limited to 'src/port')
| -rw-r--r-- | src/port/pg_crc32c_sse42.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/port/pg_crc32c_sse42.c b/src/port/pg_crc32c_sse42.c index 3b94a7388ab..10fc01e1f06 100644 --- a/src/port/pg_crc32c_sse42.c +++ b/src/port/pg_crc32c_sse42.c @@ -18,6 +18,7 @@ #include "port/pg_crc32c.h" +pg_attribute_no_sanitize_alignment() pg_crc32c pg_comp_crc32c_sse42(pg_crc32c crc, const void *data, size_t len) { |