From ac631cbe7021105c7fb8438deaeef66fe544b9aa Mon Sep 17 00:00:00 2001 From: Aldy Hernandez Date: Fri, 29 Jul 2016 16:40:55 +0000 Subject: libiberty.h (MAX_ALLOCA_SIZE): New macro. include/ * libiberty.h (MAX_ALLOCA_SIZE): New macro. libiberty/ * make-relative-prefix.c (make_relative_prefix_1): Fall back to malloc if alloca argument is greater than MAX_ALLOCA_SIZE. From-SVN: r238880 --- libiberty/make-relative-prefix.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'libiberty/make-relative-prefix.c') diff --git a/libiberty/make-relative-prefix.c b/libiberty/make-relative-prefix.c index fe639d1..fa81399 100644 --- a/libiberty/make-relative-prefix.c +++ b/libiberty/make-relative-prefix.c @@ -233,6 +233,7 @@ make_relative_prefix_1 (const char *progname, const char *bin_prefix, int i, n, common; int needed_len; char *ret = NULL, *ptr, *full_progname; + char *alloc_ptr = NULL; if (progname == NULL || bin_prefix == NULL || prefix == NULL) return NULL; @@ -256,7 +257,10 @@ make_relative_prefix_1 (const char *progname, const char *bin_prefix, #ifdef HAVE_HOST_EXECUTABLE_SUFFIX len += strlen (HOST_EXECUTABLE_SUFFIX); #endif - nstore = (char *) alloca (len); + if (len < MAX_ALLOCA_SIZE) + nstore = (char *) alloca (len); + else + alloc_ptr = nstore = (char *) malloc (len); startp = endp = temp; while (1) @@ -312,12 +316,12 @@ make_relative_prefix_1 (const char *progname, const char *bin_prefix, else full_progname = strdup (progname); if (full_progname == NULL) - return NULL; + goto bailout; prog_dirs = split_directories (full_progname, &prog_num); free (full_progname); if (prog_dirs == NULL) - return NULL; + goto bailout; bin_dirs = split_directories (bin_prefix, &bin_num); if (bin_dirs == NULL) @@ -395,6 +399,7 @@ make_relative_prefix_1 (const char *progname, const char *bin_prefix, free_split_directories (prog_dirs); free_split_directories (bin_dirs); free_split_directories (prefix_dirs); + free (alloc_ptr); return ret; } -- cgit v1.1