core.thread: Fix Fiber stack size too small for ucontext_t implementation

ibuclaw · ibuclaw · commit e2349d87903c · 2020-12-09T14:51:00.000+01:00
diff --git a/src/core/thread/fiber.d b/src/core/thread/fiber.d
@@ -958,6 +958,13 @@ private:
         {
             version (Posix) import core.sys.posix.sys.mman; // mmap, MAP_ANON
 
+            static if ( __traits( compiles, ucontext_t ) )
+            {
+                // Stack size must be at least the minimum allowable by the OS.
+                if (sz < MINSIGSTKSZ)
+                    sz = MINSIGSTKSZ;
+            }
+
             static if ( __traits( compiles, mmap ) )
             {
                 // Allocate more for the memory guard

Original file line number	Diff line number	Diff line change
`@@ -958,6 +958,13 @@ private:`
`958`	`958`	`{`
`959`	`959`	`version (Posix) import core.sys.posix.sys.mman; // mmap, MAP_ANON`
`960`	`960`
	`961`	`+ static if ( __traits( compiles, ucontext_t ) )`
	`962`	`+ {`
	`963`	`+ // Stack size must be at least the minimum allowable by the OS.`
	`964`	`+ if (sz < MINSIGSTKSZ)`
	`965`	`+ sz = MINSIGSTKSZ;`
	`966`	`+ }`
	`967`	`+`
`961`	`968`	`static if ( __traits( compiles, mmap ) )`
`962`	`969`	`{`
`963`	`970`	`// Allocate more for the memory guard`