kernelbase: Don't round thread stack guaranteed size when it is zero.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>

kernelbase: Don't round thread stack guaranteed size when it is zero.
b1bb4f84 · Alexandre Julliard · 7ee66b29 · b1bb4f84
Commit b1bb4f84 authored Sep 18, 2019 by Alexandre Julliard
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thread.c dlls/kernelbase/thread.c +1 -1

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--- a/dlls/kernelbase/thread.c
+++ b/dlls/kernelbase/thread.c
@@ -505,7 +505,7 @@ BOOL WINAPI DECLSPEC_HOTPATCH SetThreadStackGuarantee( ULONG *size )
    ULONG new_size = (*size + 4095) & ~4095;

    /* at least 2 pages on 64-bit */
-    if (sizeof(void *) > sizeof(int)) new_size = max( new_size, 8192 );
+    if (sizeof(void *) > sizeof(int) && new_size) new_size = max( new_size, 8192 );

    *size = prev_size;
    if (new_size >= (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->DeallocationStack)