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runtime: descriptive panics for use of nil map

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R=r, r2
CC=golang-dev
https://golang.org/cl/4173060
This commit is contained in:
Russ Cox 2011-02-17 16:08:52 -05:00
parent 712888910b
commit f2852ba618
1 changed files with 18 additions and 0 deletions
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18
src/pkg/runtime/hashmap.c
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@ -781,6 +781,9 @@ runtime·mapaccess(Hmap *h, byte *ak, byte *av, bool *pres)
{
byte *res;
if(h == nil)
runtime·panicstring("lookup in nil map");
if(runtime·gcwaiting)
runtime·gosched();
@ -802,6 +805,9 @@ runtime·mapaccess1(Hmap *h, ...)
byte *ak, *av;
bool pres;
if(h == nil)
runtime·panicstring("lookup in nil map");
ak = (byte*)&h + h->ko1;
av = (byte*)&h + h->vo1;
@ -827,6 +833,9 @@ runtime·mapaccess2(Hmap *h, ...)
{
byte *ak, *av, *ap;
if(h == nil)
runtime·panicstring("lookup in nil map");
ak = (byte*)&h + h->ko1;
av = (byte*)&h + h->vo1;
ap = (byte*)&h + h->po1;
@ -852,6 +861,9 @@ runtime·mapassign(Hmap *h, byte *ak, byte *av)
byte *res;
int32 hit;
if(h == nil)
runtime·panicstring("assignment to entry in nil map");
if(runtime·gcwaiting)
runtime·gosched();
@ -889,6 +901,9 @@ runtime·mapassign1(Hmap *h, ...)
{
byte *ak, *av;
if(h == nil)
runtime·panicstring("assignment to entry in nil map");
ak = (byte*)&h + h->ko2;
av = (byte*)&h + h->vo2;
@ -902,6 +917,9 @@ runtime·mapassign2(Hmap *h, ...)
{
byte *ak, *av, *ap;
if(h == nil)
runtime·panicstring("assignment to entry in nil map");
ak = (byte*)&h + h->ko2;
av = (byte*)&h + h->vo2;
ap = (byte*)&h + h->po2;