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ircd::buffer: Suppress errant array/stringop-overflow in debug+assert mode.

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This commit is contained in:
Jason Volk 2023-01-15 20:29:18 -08:00
parent c78ab62227
commit f8538d3c5b
1 changed files with 11 additions and 0 deletions
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11
include/ircd/buffer/copy.h
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@ -85,7 +85,18 @@ ircd::buffer::copy(char *&__restrict__ dest,
assert(!overlap(const_buffer(dest, cpsz), src)); assert(!overlap(const_buffer(dest, cpsz), src));
assert(cpsz <= size(src)); assert(cpsz <= size(src));
assert(cpsz <= remain); assert(cpsz <= remain);
// Suppress warnings which present from the __builtin_memcpy() but these
// are actually caused by the overlap assertion above which should have no
// side-effects; this is very likely a bug in gcc.
#pragma GCC diagnostic push
#ifdef RB_ASSERT
#pragma GCC diagnostic ignored "-Warray-bounds"
#pragma GCC diagnostic ignored "-Wstringop-overflow"
#endif
__builtin_memcpy(dest, srcp, cpsz); __builtin_memcpy(dest, srcp, cpsz);
#pragma GCC diagnostic pop
dest += cpsz; dest += cpsz;
assert(dest <= stop); assert(dest <= stop);
return dest; return dest;