[Python-checkins] bpo-38359: Ensures pyw.exe launcher reads correct registry key (GH-16561)
Steve Dower
webhook-mailer at python.org
Thu Oct 3 11:31:25 EDT 2019
https://github.com/python/cpython/commit/353fb1ecbfd58752dabae115c4964095e1e35e5f
commit: 353fb1ecbfd58752dabae115c4964095e1e35e5f
branch: master
author: Steve Dower <steve.dower at python.org>
committer: GitHub <noreply at github.com>
date: 2019-10-03T08:31:21-07:00
summary:
bpo-38359: Ensures pyw.exe launcher reads correct registry key (GH-16561)
files:
A Misc/NEWS.d/next/Windows/2019-10-03-08-04-14.bpo-38359.wzwsl_.rst
M PC/launcher.c
diff --git a/Misc/NEWS.d/next/Windows/2019-10-03-08-04-14.bpo-38359.wzwsl_.rst b/Misc/NEWS.d/next/Windows/2019-10-03-08-04-14.bpo-38359.wzwsl_.rst
new file mode 100644
index 0000000000000..ab6f29baf5358
--- /dev/null
+++ b/Misc/NEWS.d/next/Windows/2019-10-03-08-04-14.bpo-38359.wzwsl_.rst
@@ -0,0 +1 @@
+Ensures ``pyw.exe`` launcher reads correct registry key.
diff --git a/PC/launcher.c b/PC/launcher.c
index a260860f3c27a..2749a4e705467 100644
--- a/PC/launcher.c
+++ b/PC/launcher.c
@@ -141,6 +141,8 @@ static wchar_t * get_env(wchar_t * key)
}
#if defined(_DEBUG)
+/* Do not define EXECUTABLEPATH_VALUE in debug builds as it'll
+ never point to the debug build. */
#if defined(_WINDOWS)
#define PYTHON_EXECUTABLE L"pythonw_d.exe"
@@ -154,10 +156,12 @@ static wchar_t * get_env(wchar_t * key)
#if defined(_WINDOWS)
#define PYTHON_EXECUTABLE L"pythonw.exe"
+#define EXECUTABLEPATH_VALUE L"WindowedExecutablePath"
#else
#define PYTHON_EXECUTABLE L"python.exe"
+#define EXECUTABLEPATH_VALUE L"ExecutablePath"
#endif
#endif
@@ -297,8 +301,12 @@ _locate_pythons_for_key(HKEY root, LPCWSTR subkey, REGSAM flags, int bits,
}
data_size = sizeof(ip->executable) - 1;
append_name = FALSE;
- status = RegQueryValueExW(ip_key, L"ExecutablePath", NULL, &type,
+#ifdef EXECUTABLEPATH_VALUE
+ status = RegQueryValueExW(ip_key, EXECUTABLEPATH_VALUE, NULL, &type,
(LPBYTE)ip->executable, &data_size);
+#else
+ status = ERROR_FILE_NOT_FOUND; /* actual error doesn't matter */
+#endif
if (status != ERROR_SUCCESS || type != REG_SZ || !data_size) {
append_name = TRUE;
data_size = sizeof(ip->executable) - 1;
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