failure in nightly build

make ended with

cc -g -Wall -Wundef -Wsign-compare -Wpointer-arith -O3 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Wunused-parameter -fno-omit-frame-pointer -momit-leaf-frame-pointer -I.  -c -o gc-common.o gc-common.c
cc -g -Wall -Wundef -Wsign-compare -Wpointer-arith -O3 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Wunused-parameter -fno-omit-frame-pointer -momit-leaf-frame-pointer -I.  -c -o globals.o globals.c
globals.c:124:28: error: initializer element is not constant
 int dynamic_values_bytes = 4096 * bytes_per_tls_symbol;  // same for all threads
                            ^~~~
<builtin>: recipe for target 'globals.o' failed
make: *** [globals.o] Error 1

I hope someone knows how to fix it.