http://llvm.org/bugs/show_bug.cgi?id=18978
Bug ID: 18978
Summary: initialize a large static array = clang oom?
Product: clang
Version: 3.4
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 12154
--> http://llvm.org/bugs/attachment.cgi?id=12154&action=edit
code+sh
clang 3.3 is fine (although slow)
clang 3.4 will oom
[2632819.135797] Out of memory: Kill process 11919 (clang) score 848
or sacrifice child
[2632819.136017] Killed process 11919 (clang) total-vm:7024768kB,
anon-rss:6925660kB, file-rss:64kB
it boils down to a single line change:
static cache_entry_t cache[APPLY_CACHE_SIZE] = {{ 0 }};
will cause the oom (in 3.3 it will produce a pretty big object file, like 128M)
static cache_entry_t cache[APPLY_CACHE_SIZE];
will fix the oom, the end effect is same, since static variables are
initialized to 0 anyway.
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