diff options
Diffstat (limited to 'stdlib')
-rw-r--r-- | stdlib/Makefile | 2 | ||||
-rw-r--r-- | stdlib/setenv.c | 29 | ||||
-rw-r--r-- | stdlib/tst-unsetenv1.c | 12 |
3 files changed, 28 insertions, 15 deletions
diff --git a/stdlib/Makefile b/stdlib/Makefile index 1fe7f70177..a69bdaeb73 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -69,7 +69,7 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \ test-a64l tst-qsort tst-system testmb2 bug-strtod2 \ tst-atof1 tst-atof2 tst-strtod2 tst-strtod3 tst-rand48-2 \ tst-makecontext tst-strtod4 tst-strtod5 tst-qsort2 \ - tst-makecontext2 tst-strtod6 + tst-makecontext2 tst-strtod6 tst-unsetenv1 include ../Makeconfig diff --git a/stdlib/setenv.c b/stdlib/setenv.c index 48aaecffe0..fe591b7db8 100644 --- a/stdlib/setenv.c +++ b/stdlib/setenv.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1992,1995-2001,2004 Free Software Foundation, Inc. +/* Copyright (C) 1992,1995-2001,2004, 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -292,19 +292,20 @@ unsetenv (name) LOCK; ep = __environ; - while (*ep != NULL) - if (!strncmp (*ep, name, len) && (*ep)[len] == '=') - { - /* Found it. Remove this pointer by moving later ones back. */ - char **dp = ep; - - do - dp[0] = dp[1]; - while (*dp++); - /* Continue the loop in case NAME appears again. */ - } - else - ++ep; + if (ep != NULL) + while (*ep != NULL) + if (!strncmp (*ep, name, len) && (*ep)[len] == '=') + { + /* Found it. Remove this pointer by moving later ones back. */ + char **dp = ep; + + do + dp[0] = dp[1]; + while (*dp++); + /* Continue the loop in case NAME appears again. */ + } + else + ++ep; UNLOCK; diff --git a/stdlib/tst-unsetenv1.c b/stdlib/tst-unsetenv1.c new file mode 100644 index 0000000000..a2a760d241 --- /dev/null +++ b/stdlib/tst-unsetenv1.c @@ -0,0 +1,12 @@ +#include <stdlib.h> + +static int +do_test (void) +{ + clearenv (); + unsetenv ("FOO"); + return 0; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |