[LLVMbugs] [Bug 14643] New: diagnostic message tweaks

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=14643

             Bug #: 14643
           Summary: diagnostic message tweaks
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: FreeBSD
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: M8R-9yw8a5 at mailinator.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Created attachment 9735
  --> http://llvm.org/bugs/attachment.cgi?id=9735
source code with bugette descriptions

1. source code (file name: f.c), filled with comments about the bugettes:

static char a_char;
static float a_float;

static char *a_ptr_to_char;
static int *a_ptr_to_int;

typedef char *string;
static string *a_ptr_to_string;

void f(void)
{
    // ===== case #1 =====
    *a_char; // WRONG, prints: error: indirection requires pointer operand
('int' invalid)
             //  should print: error: indirection requires pointer operand
('char' invalid)

    // ===== case #2 =====
    *a_float; //                     prints: error: indirection requires
pointer operand ('float' invalid)
              // recommendation is to print: error: indirection requires
pointer operand ('float' is invalid)

    // ===== case #3 =====
    int *a = *a_ptr_to_int;   // prints: warning: incompatible integer to
pointer conversion initializing 'int *' with an expression of type 'int';
remove *
    char *b = *a_ptr_to_char; // prints: warning: incompatible integer to
pointer conversion initializing 'char *' with an expression of type 'char';
remove *
                              // recommendation is to replace "integer" with
"integral" in all similar cases
}

2. command line:

clang -c f.c

3. output (currently):

f.c:13:2: error: indirection requires pointer operand ('int' invalid)
        *a_char; // WRONG, prints: error: indirection requires pointer operand
('int' invalid)
        ^~~~~~~
f.c:17:2: error: indirection requires pointer operand ('float' invalid)
        *a_float; //                     prints: error: indirection requires
pointer operand ('float' invalid)
        ^~~~~~~~
f.c:21:7: warning: incompatible integer to pointer conversion initializing 'int
*' with an expression of type 'int'; remove * [-Wint-conversion]
        int *a = *a_ptr_to_int;   // prints: warning: incompatible integer to
pointer conversion initializing 'int *' with an expression of type 'int';
remove *
             ^   ~~~~~~~~~~~~~
f.c:22:8: warning: incompatible integer to pointer conversion initializing
'char *' with an expression of type 'char'; remove * [-Wint-conversion]
        char *b = *a_ptr_to_char; // prints: warning: incompatible integer to
pointer conversion initializing 'char *' with an expression of type 'char';
remove *
              ^   ~~~~~~~~~~~~~~

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