Re: gnulib's malloca use under valgrind

[Bruno Haible]

Hi Nikos,

>  When we enabled running tests under valgrind in libidn2 [0] we found
> out this issue, which involves the unistring/iconv part of the gnulib
> code:
> 
> ==3644== Conditional jump or move depends on uninitialised value(s)
> ==3644==    at 0x4E3EBCC: freea (malloca.c:134)
> ==3644==    by 0x4E40C1D: mem_iconveha (striconveha.c:255)
> ==3644==    by 0x4E40E36: u8_conv_from_encoding (u8-conv-from-enc.c:98)
> ==3644==    by 0x4E41017: u8_strconv_from_encoding (u-strconv-from-enc.h:34)
> ==3644==    by 0x4E3BDA2: idn2_lookup_ul (lookup.c:454)
> ==3644==    by 0x10C1CD: test_homebrewed (test-lookup.c:941)
> ==3644==    by 0x10C1CD: main (test-lookup.c:1177)
> 
> The warning seems to be caused by the malloca() use on this function.

The 'malloca' module includes a file lib/malloca.valgrind. You can use this
file, with the valgrind option --suppressions, to make the warning disappear.

Bruno