[pull] master from php:master#463
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pull[bot] merged 5 commits intokingdavid6336:masterfrom May 27, 2020
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* PHP-7.3: Fixed possible usage of uninitialized value
* PHP-7.4: Fixed possible usage of uninitialized value
If * is used for width/precision in printf, then the width/precision
is provided by a printf argument instead of being part of the format
string. Semantics generally match those of printf in C.
This can be used to easily reproduce PHP's float printing behavior:
// Locale-sensitive using precision ini setting.
// Used prior to PHP 8.0.
sprintf("%.*G", (int) ini_get('precision'), $float);
// Locale-insensitive using precision ini setting.
// Used since to PHP 8.0.
sprintf("%.*H", (int) ini_get('precision'), $float);
// Locale-insensitive using serialize_precision ini setting.
// Used in serialize(), json_encode() etc.
sprintf("%.*H", (int) ini_get('serialize_precision'), $float);
Closes GH-5432.
Apparently, breakpoints and watchpoints are practically disabled if run with OPcache JIT under Windows, so we mark the affected tests as xfail in that case for the time being.
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