Use serialize_precision for var_dump()

var_dump() is debugging functionality, so it should print
floating-point numbers accurately. We do this by switching
to serialize_precision, which (by default) will print with
as much precision as necessary to preserve the exact value
of the float.

This also affects debug_zval_dump().

Closes GH-5172.

1 files changed, 1 insertions, 0 deletions

diff --git a/run-tests.php b/run-tests.php
index 85252e644e..ebcaabba02 100755
--- a/run-tests.php
+++ b/run-tests.php
@@ -254,6 +254,7 @@ NO_PROC_OPEN_ERROR;
         'auto_append_file=',
         'ignore_repeated_errors=0',
         'precision=14',
+        'serialize_precision=-1',
         'memory_limit=128M',
         'log_errors_max_len=0',
         'opcache.fast_shutdown=0',