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py/mpconfig.h: Allow to build without alloca() for ANSI C compliance.

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Define MICROPY_NO_ALLOCA=1 and memory will be allocated from heap instead
and freed by garbage collection.
This commit is contained in:
Paul Sokolovsky 2015-11-25 23:22:31 +02:00
parent f0fbab7ca7
commit f32020ef3d
1 changed files with 10 additions and 0 deletions
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10
py/mpconfig.h
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@ -189,6 +189,16 @@
#define MICROPY_STACKLESS_STRICT (0) #define MICROPY_STACKLESS_STRICT (0)
#endif #endif
// Don't use alloca calls. As alloca() is not part of ANSI C, this
// workaround option is provided for compilers lacking this de-facto
// standard function. The way it works is allocating from heap, and
// relying on garbage collection to free it eventually. This is of
// course much less optimal than real alloca().
#if defined(MICROPY_NO_ALLOCA) && MICROPY_NO_ALLOCA
#undef alloca
#define alloca(x) m_malloc(x)
#endif
/*****************************************************************************/ /*****************************************************************************/
/* Micro Python emitters */ /* Micro Python emitters */