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execl: cast NULL sentinel to (char *), per man page and compiler warning

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From exec(3):

> The list of arguments must be terminated by a null pointer, and, since these
> are variadic functions, this pointer must be cast (char *) NULL
This commit is contained in:
Will Dietz 2018-03-20 13:29:29 -05:00
parent bed22114bf
commit 02d36fdab7
1 changed files with 5 additions and 5 deletions
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10
src/libmain/shared.cc
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@ -263,7 +263,7 @@ void showManPage(const string & name)
{
restoreSignals();
setenv("MANPATH", settings.nixManDir.c_str(), 1);
execlp("man", "man", name.c_str(), NULL);
execlp("man", "man", name.c_str(), (char *)NULL);
throw SysError(format("command 'man %1%' failed") % name.c_str());
}
@ -325,10 +325,10 @@ RunPager::RunPager()
setenv("LESS", "FRSXMK", 1);
restoreSignals();
if (pager)
execl("/bin/sh", "sh", "-c", pager, NULL);
execlp("pager", "pager", NULL);
execlp("less", "less", NULL);
execlp("more", "more", NULL);
execl("/bin/sh", "sh", "-c", pager, (char *)NULL);
execlp("pager", "pager", (char *)NULL);
execlp("less", "less", (char *)NULL);
execlp("more", "more", (char *)NULL);
throw SysError(format("executing '%1%'") % pager);
});