https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65445
Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |manu at gcc dot gnu.org
--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
There is a trivial fix, which is to use the appropriate OPT_Wx flag when
calling warning().
However, Joseph and I think that if the warning was enabled via a group option,
then it would be better to print both, such as:
[-Wformat=,-Wformat-contains-null]
This should be feasible now that options relationships are encoded in the *.opt
files. One would need to build in the opt*.awk scripts a static data-structure
that given OPT_Wx gives a list of OPT_Wy options that enable it. Something
like:
static int opts_enable_opt_table [] = {
...
2, OPT_Wall, OPT_Wc++-compat, /* OPT_Wenum_compare */
1, OPT_Wformat, /* OPT_Wformat_contains_nul */
...
};
static int opts_enable_opt_index [] = {
...
/* OPT_Wenum_compare */ 50,
/* OPT_Wformat_contains_nul */ 53,
/* OPT_Wall */ -1,
....
};
such that opts_enable_opt_table[opts_enable_opt_index[OPT_Wformat_contains_nul]
+ 1] == OPT_Wformat
Then add a function that given an OPT_Wx, returns which OPT_Wy options that
enable it are enabled at this moment. Then, use this function when printing the
warning in diagnostics.c.
