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-rw-r--r--system/lib/dlmalloc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/system/lib/dlmalloc.c b/system/lib/dlmalloc.c
index 9a84d48f..e833ae42 100644
--- a/system/lib/dlmalloc.c
+++ b/system/lib/dlmalloc.c
@@ -1275,7 +1275,8 @@ extern "C" {
p = malloc(n);
assert(malloc_usable_size(p) >= 256);
*/
- size_t dlmalloc_usable_size(void*);
+ /* XXX EMSCRIPTEN: mark for export (and therefore weak) */
+ DLMALLOC_EXPORT size_t dlmalloc_usable_size(void*);
#endif /* ONLY_MSPACES */