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| author | Emil Renner Berthing <esmil@mailme.dk> | 2019-11-28 12:47:21 +0100 |
|---|---|---|
| committer | Emil Renner Berthing <esmil@mailme.dk> | 2020-10-22 11:53:16 +0200 |
| commit | ccd92335a11f03597f94da2ac937811ff3fa50cf (patch) | |
| tree | 2a31448c25724edf2ff5213b1cc1b52dd5ff0f82 /py/mpconfig.h | |
| parent | dde3db21fcd8d810bb59e0c56dfa5fd9208e1544 (diff) | |
py, extmod: Introduce and use MP_FALLTHROUGH macro.
Newer GCC versions are able to warn about switch cases that fall
through. This is usually a sign of a forgotten break statement, but in
the few cases where a fall through is intended we annotate it with this
macro to avoid the warning.
Diffstat (limited to 'py/mpconfig.h')
| -rw-r--r-- | py/mpconfig.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/py/mpconfig.h b/py/mpconfig.h index cc83f3850..854188b66 100644 --- a/py/mpconfig.h +++ b/py/mpconfig.h @@ -1643,6 +1643,13 @@ typedef double mp_float_t; #endif #endif +// Explicitly annotate switch case fall throughs +#if defined(__GNUC__) && __GNUC__ >= 7 +#define MP_FALLTHROUGH __attribute__((fallthrough)); +#else +#define MP_FALLTHROUGH +#endif + #ifndef MP_HTOBE16 #if MP_ENDIANNESS_LITTLE #define MP_HTOBE16(x) ((uint16_t)((((x) & 0xff) << 8) | (((x) >> 8) & 0xff))) |