[llvm-bugs] [Bug 52328] New: Poor diagnostic for missing semicolon before case label

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=52328

            Bug ID: 52328
           Summary: Poor diagnostic for missing semicolon before case
                    label
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: hans at chromium.org
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

$ cat /tmp/a.c
void f(int x) {
         switch (x) {
         case 0: return  // <-- Missing semicolon.
         case 1: return;
         }
}

$ clang -c /tmp/a.c
/tmp/a.c:4:10: error: expected expression
         case 1: return;
         ^
1 error generated.



When the return statement has an expression, we get it right:

$ cat /tmp/b.c
int f(int x) {
         switch (x) {
         case 0: return 1  // <-- Missing semicolon.
         case 1: return 2;
         }
}

$ clang -c /tmp/b.c
/tmp/b.c:3:26: error: expected ';' after return statement
         case 0: return 1  // <-- Missing semicolon.
                         ^
                         ;
1 error generated.

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