We should never allocate a 0-sized buffer, so never grow from 0.

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index 1c690a8a6d720169f44c5e20ceafb4a300f80b7d..1a2f5d6e5dd0ecd274b2dd63888121a1175308a0 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -3202,9 +3202,7 @@ void Assembler::GrowBuffer() {
 
   // Compute new buffer size.
   CodeDesc desc;  // the new buffer
-  if (buffer_size_ == 0) {
-    desc.buffer_size = kMinimalBufferSize;
-  } else if (buffer_size_ < 1*MB) {
+  if (buffer_size_ < 1 * MB) {
     desc.buffer_size = 2*buffer_size_;
   } else {
     desc.buffer_size = buffer_size_ + 1*MB;