Closed Bug 1235236 Opened 4 years ago Closed 4 years ago

Fix -Wimplicit-fallthrough warning in modules/libjar/

Categories

(Core :: Networking: JAR, defect)

defect
Not set

Tracking

()

RESOLVED FIXED
mozilla46
Tracking Status
firefox46 --- fixed

People

(Reporter: cpeterson, Assigned: cpeterson)

Details

Attachments

(1 file)

modules/libjar/nsJARInputStream.cpp:112:13 [-Wimplicit-fallthrough] unannotated fall-through between switch labels

This patch fixes a clang -Wimplicit-fallthrough warning (not yet enabled by default in mozilla-central) about switch cases that fall through without a break or return statement. Warnings about intentional fallthroughs can be suppressed with MOZ_FALLTHROUGH, a MFBT macro for a clang compiler annotation. MOZ_FALLTHROUGH is only needed on cases that have code:

switch (foo) {
  case 1: // These cases have no code. No fallthrough annotations are needed.
  case 2:
  case 3:
    foo = 4; // This case has code, so a fallthrough annotation is needed:
    MOZ_FALLTHROUGH;
  default:
    return foo;
}
Attachment #8702098 - Flags: review?(aklotz)
Comment on attachment 8702098 [details] [diff] [review]
libjar_MOZ_FALLTHROUGH.patch

Review of attachment 8702098 [details] [diff] [review]:
-----------------------------------------------------------------

Cool, thanks!
Attachment #8702098 - Flags: review?(aklotz) → review+
https://hg.mozilla.org/mozilla-central/rev/96ce3bd0b806
Status: NEW → RESOLVED
Closed: 4 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla46
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