X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Ftestsuite%2Fgcc.c-torture%2Fexecute%2Fmulti-ix.c;h=fdfa567795a2a17e593c4c4093c69d1781b58bd8;hp=d61a3136706840d88f46f0efc017a1b56a847df5;hb=56bcf859add3c5a99a2d5b2d8178af7343255c18;hpb=f03c17bc9da480b383fb3ac81f00663c7b58566d

diff --git a/gcc/testsuite/gcc.c-torture/execute/multi-ix.c b/gcc/testsuite/gcc.c-torture/execute/multi-ix.c
index d61a3136706..fdfa567795a 100644
--- a/gcc/testsuite/gcc.c-torture/execute/multi-ix.c
+++ b/gcc/testsuite/gcc.c-torture/execute/multi-ix.c
@@ -12,7 +12,17 @@
 #include <stdarg.h>
 
 #ifdef STACK_SIZE
-#define CHUNK ((STACK_SIZE-100)/40/sizeof(int))
+/* We need to be careful that we don't blow our stack.  Function f, in the
+   worst case, needs to fit on the stack:
+
+   * 40 int[CHUNK] arrays;
+   * ~40 ints;
+   * ~40 pointers for stdarg passing.
+
+   Subtract the last two off STACK_SIZE and figure out what the maximum
+   chunk size can be.  We make the last bit conservative to account for
+   register saves and other processor-dependent saving.  */
+#define CHUNK ((STACK_SIZE-40*sizeof(int)-256*sizeof(void *))/40/sizeof(int))
 #else
 #define CHUNK 500
 #endif