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runtime: Delete from a nil map is now a no-op. 

From-SVN: r194462
This commit is contained in:
Ian Lance Taylor 2012-12-12 23:29:10 +00:00
parent 8318d4ce56
commit 35f33e3802
2 changed files with 3 additions and 4 deletions
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5
gcc/testsuite/go.test/test/nil.go
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@ -151,9 +151,8 @@ func maptest() {
shouldPanic(func() { shouldPanic(func() {
m[2] = 3 m[2] = 3
}) })
shouldPanic(func() { // can delete (non-existent) entries
delete(m, 2) delete(m, 2)
})
} }
// nil slice // nil slice

2
libgo/runtime/go-map-delete.c
View File

@ -27,7 +27,7 @@ __go_map_delete (struct __go_map *map, const void *key)
void **pentry; void **pentry;
if (map == NULL) if (map == NULL)
runtime_panicstring ("deletion of entry in nil map"); return;
descriptor = map->__descriptor; descriptor = map->__descriptor;