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c-typeck.c (convert_for_assignment): Tightened up pointer converstions that differ in signedness.

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* c-typeck.c (convert_for_assignment): Tightened up pointer converstions
        that differ in signedness.
Apple Radar 2535328.

From-SVN: r85114
This commit is contained in:
Mike Stump 2004-07-24 07:32:15 +00:00 • committed by Mike Stump
parent 4c61a9fd7b
commit 0c6d842886
3 changed files with 32 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-07-23 Mike Stump <mrs@apple.com>
* c-typeck.c (convert_for_assignment): Tightened up pointer converstions
that differ in signedness.
2004-07-23 Zack Weinberg <zack@codesourcery.com>
* genmodes.c (make_vector_modes): Mark with ATTRIBUTE_UNUSED.

2
gcc/c-typeck.c
View file

@ -3472,7 +3472,7 @@ convert_for_assignment (tree type, tree rhs, const char *errtype,
|| target_cmp)
;
/* If there is a mismatch, do warn. */
else if (pedantic)
else
warn_for_assignment ("pointer targets in %s differ in signedness",
errtype, funname, parmnum);
}

26
gcc/testsuite/gcc.dg/conv-2.c Normal file
View file

@ -0,0 +1,26 @@
/* { dg-do compile } */
/* { dg-options "" } */
void f1(long *);
void f2(unsigned long *);
int main()
{
long *lp;
unsigned long *ulp;
char *cp;
unsigned char *ucp;
signed char *scp;
ulp = lp; /* { dg-warning " pointer targets in assignment differ in signedness" } */
lp = ulp; /* { dg-warning " pointer targets in assignment differ in signedness" } */
f1(ulp); /* { dg-warning " differ in signedness" } */
f2(lp); /* { dg-warning " differ in signedness" } */
cp = ucp; /* { dg-warning " pointer targets in assignment differ in signedness" } */
cp = scp; /* { dg-warning " pointer targets in assignment differ in signedness" } */
ucp = scp; /* { dg-warning " pointer targets in assignment differ in signedness" } */
ucp = cp; /* { dg-warning " pointer targets in assignment differ in signedness" } */
scp = ucp; /* { dg-warning " pointer targets in assignment differ in signedness" } */
scp = cp; /* { dg-warning " pointer targets in assignment differ in signedness" } */
}