diff options
Diffstat (limited to 'src/pkg/runtime/malloc.goc')
| -rw-r--r-- | src/pkg/runtime/malloc.goc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/pkg/runtime/malloc.goc b/src/pkg/runtime/malloc.goc index abbf63b931..41060682eb 100644 --- a/src/pkg/runtime/malloc.goc +++ b/src/pkg/runtime/malloc.goc @@ -394,6 +394,12 @@ runtime·stackalloc(uint32 n) { void *v; + // Stackalloc must be called on scheduler stack, so that we + // never try to grow the stack during the code that stackalloc runs. + // Doing so would cause a deadlock (issue 1547). + if(g != m->g0) + runtime·throw("stackalloc not on scheduler stack"); + if(m->mallocing || m->gcing || n == FixedStack) { runtime·lock(&stacks); if(stacks.size == 0) |