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| author | Paul Smith <paul@mad-scientist.net> | 2022-10-14 14:33:08 -0400 |
|---|---|---|
| committer | Qi Wang <interwq@gmail.com> | 2022-10-14 15:48:32 -0700 |
| commit | be65438f20a5fe4fdc5c5bb2cfa7ba3f0e9da378 (patch) | |
| tree | 41f9403cc2d436c5643cb00e44df61535001da2c | |
| parent | 1897f185d2c06307fefc4d8f4512eeb13c474999 (diff) | |
| download | jemalloc-be65438f20a5fe4fdc5c5bb2cfa7ba3f0e9da378.tar.gz | |
jemalloc_internal_types.h: Use alloca if __STDC_NO_VLA__ is defined
No currently-available version of Visual Studio C compiler supports
variable length arrays, even if it defines __STDC_VERSION__ >= C99.
As far as I know Microsoft has no plans to ever support VLAs in MSVC.
The C11 standard requires that the __STDC_NO_VLA__ macro be defined if
the compiler doesn't support VLAs, so fall back to alloca() if so.
| -rw-r--r-- | include/jemalloc/internal/jemalloc_internal_types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/jemalloc/internal/jemalloc_internal_types.h b/include/jemalloc/internal/jemalloc_internal_types.h index 62c2b59c..b23a8bed 100644 --- a/include/jemalloc/internal/jemalloc_internal_types.h +++ b/include/jemalloc/internal/jemalloc_internal_types.h @@ -110,7 +110,7 @@ typedef enum malloc_init_e malloc_init_t; (((s) + (alignment - 1)) & ((~(alignment)) + 1)) /* Declare a variable-length array. */ -#if __STDC_VERSION__ < 199901L +#if __STDC_VERSION__ < 199901L || defined(__STDC_NO_VLA__) # ifdef _MSC_VER # include <malloc.h> # define alloca _alloca |