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gnu.cfg: Add configuration for __alignof__() (#2268) 

Reference: https://gcc.gnu.org/onlinedocs/gcc-6.2.0/gcc/Alignment.html
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Sebastian 2019-10-14 20:59:38 +02:00 committed by amai2012
parent 62d972061b
commit 60de5e12dd
2 changed files with 13 additions and 0 deletions
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11
cfg/gnu.cfg
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@ -110,6 +110,17 @@
<not-uninit/> <not-uninit/>
</arg> </arg>
</function> </function>
<!-- https://gcc.gnu.org/onlinedocs/gcc-6.2.0/gcc/Alignment.html -->
<!-- __alignof__ is used like sizeof -->
<!-- Declaration for this GNU compiler extension could look like this: -->
<!-- size_t __alignof__(type); -->
<!-- size_t __alignof__(expression); -->
<function name="__alignof__">
<noreturn>false</noreturn>
<use-retval/>
<leak-ignore/>
<arg nr="1" direction="in"/>
</function>
<!-- int timerisset(struct timeval *tvp); --> <!-- int timerisset(struct timeval *tvp); -->
<function name="timerisset"> <function name="timerisset">
<noreturn>false</noreturn> <noreturn>false</noreturn>

2
test/cfg/gnu.c
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@ -146,6 +146,8 @@ void valid_code(int argInt1, va_list valist_arg, int * parg)
printf("%d", 0b010); printf("%d", 0b010);
printf("%d", __extension__ 0b10001000); printf("%d", __extension__ 0b10001000);
if (__alignof__(int) == 4) {}
} }
void ignoreleak(void) void ignoreleak(void)