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Avoid crashing in LD_DEBUG when program name is unavailable

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Resolves: #15465

The program name may be unavailable if the user application tampers
with argc and argv[].  Some parts of the dynamic linker caters for
this while others don't, so this patch consolidates the check and
fallback into a single macro and updates all users.
This commit is contained in:
Siddhesh Poyarekar
2013-05-29 21:30:20 +05:30
parent d0501bfbe2
commit b937534868
41 changed files with 220 additions and 103 deletions
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2
elf/dl-error.c
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@ -119,7 +119,7 @@ _dl_signal_error (int errcode, const char *objname, const char *occation,
/* Lossage while resolving the program's own symbols is always fatal. */
char buffer[1024];
_dl_fatal_printf ("%s: %s: %s%s%s%s%s\n",
rtld_progname ?: "<program name unknown>",
RTLD_PROGNAME,
occation ?: N_("error while loading shared libraries"),
objname, *objname ? ": " : "",
errstring, errcode ? ": " : "",