1361444 - Anonymous structs collide across compilation units

Status: RESOLVED DUPLICATE of bug 1171815

(Core :: JavaScript: GC, enhancement, P3)

Description

[Steve Fink [:sfink] [:s:]]

eg if you have

struct {
  int x;
} EXES[] = { { 3 }, { 4 } };

gcc will fabricate a type named something like "._215". If one of these contains a GC pointer, and then in a different translation unit you hold a different anonymous struct with the same name across a GC, you get a baffling false positive.

Comment 1

[Jeff Walden [:Waldo]]

For the record, this was discovered in the attempted landing of the no-bug changesets mentioned in bug 1359980 comment 6 -- changesets which did nothing other than minimize #include dependencies, ergo reduce compile time, by adding one or two forward-declarations and #include-ing less comprehensive headers.  I landed in advance of this fix by renaming the type that served the function |EXES| serves in the example in comment 0 -- anyone else who hits this for now can act similarly as a hackaround.

Comment 2

[Steve Fink [:sfink] [:s:]]

I'm not sure which way to dupe, but I guess it doesn't matter.