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MDEV-28762: Fixup for clang

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Unlike GCC, clang could optimize away alloca() and thus the
ALLOCATE_MEM_ON_STACK() instrumentation. To make it harder, let us
invoke a non-inline function on the entire allocated buffer.
This commit is contained in:
Marko Mäkelä
2022-07-26 11:00:11 +03:00
parent 19af1890b5
commit 3bf10012e0
1 changed files with 2 additions and 3 deletions
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5
sql/item_jsonfunc.cc
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@@ -31,9 +31,8 @@
#define ALLOCATE_MEM_ON_STACK(A) do \ #define ALLOCATE_MEM_ON_STACK(A) do \
{ \ { \
uchar *array= (uchar*)alloca(A); \ uchar *array= (uchar*)alloca(A); \
array[0]= 1; \ bzero(array, A); \
array[0]++; \ my_checksum(0, array, A); \
array[0] ? array[0]++ : array[0]--; \
} while(0) } while(0)
/* /*