From: Guido van Rossum Date: Fri, 14 Mar 1997 04:23:42 +0000 (+0000) Subject: Change PyFPE_END_PROTECT to PyFPE_END_PROTECT(v). v should be the X-Git-Tag: v1.5a1~283 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1f06beeeddea2abefe6ab10ced35d7c4186f9940;p=python 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. --- diff --git a/Include/pyfpe.h b/Include/pyfpe.h index ef44e66208..b2d8feed93 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