From 1f06beeeddea2abefe6ab10ced35d7c4186f9940 Mon Sep 17 00:00:00 2001 From: Guido van Rossum Date: Fri, 14 Mar 1997 04:23:42 +0000 Subject: [PATCH] Change PyFPE_END_PROTECT to PyFPE_END_PROTECT(v). v should be the last variable to which a floating point expression is assigned. The macro passes its address to a dummy function so that the optimizer can't delay calculating its value until after the macro. --- Include/pyfpe.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Include/pyfpe.h b/Include/pyfpe.h index ef44e662082..b2d8feed939 100644 --- a/Include/pyfpe.h +++ b/Include/pyfpe.h @@ -131,7 +131,7 @@ extern "C" { #include extern jmp_buf PyFPE_jbuf; extern int PyFPE_counter; -extern double PyFPE_dummy(void); +extern double PyFPE_dummy(); #define PyFPE_START_PROTECT(err_string, leave_stmt) \ if (!PyFPE_counter++ && setjmp(PyFPE_jbuf)) { \ @@ -149,12 +149,12 @@ if (!PyFPE_counter++ && setjmp(PyFPE_jbuf)) { \ * which counts down PyFPE_counter, and thereby monkey wrench the overeager * optimizer. Better solutions are welcomed.... */ -#define PyFPE_END_PROTECT PyFPE_counter -= (int)PyFPE_dummy(); +#define PyFPE_END_PROTECT(v) PyFPE_counter -= (int)PyFPE_dummy(&(v)); #else #define PyFPE_START_PROTECT(err_string, leave_stmt) -#define PyFPE_END_PROTECT +#define PyFPE_END_PROTECT(v) #endif