diff options
author | Florian Weimer <fweimer@redhat.com> | 2018-10-30 13:11:47 +0100 |
---|---|---|
committer | Florian Weimer <fweimer@redhat.com> | 2018-11-02 10:47:16 +0100 |
commit | dcd52b94bf50f337dc4cfffa24ed86d7dfe03dc0 (patch) | |
tree | fe41ddeb5eca83bc1ecb0db76485506692e2ecd7 /stdlib/test-bz22786.c | |
parent | d0b6db4acfba1f48b24da2c9b2a1530f6dd71503 (diff) | |
download | glibc-dcd52b94bf50f337dc4cfffa24ed86d7dfe03dc0.tar.gz glibc-dcd52b94bf50f337dc4cfffa24ed86d7dfe03dc0.tar.xz glibc-dcd52b94bf50f337dc4cfffa24ed86d7dfe03dc0.zip |
stdlib/test-bz22786: Avoid spurious test failures using alias mappings
On systems without enough random-access memory, stdlib/test-bz22786 will go deeply into swap and time out, even with a substantial TIMEOUTFACTOR. This commit adds a facility to construct repeating strings with alias mappings, so that the requirement for physical memory, and uses it in stdlib/test-bz22786. (cherry picked from commit f5e7e95921847bd83186bfe621fc2b48c4de5477)
Diffstat (limited to 'stdlib/test-bz22786.c')
-rw-r--r-- | stdlib/test-bz22786.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/stdlib/test-bz22786.c b/stdlib/test-bz22786.c index 777bf9180f..bb1e04f2de 100644 --- a/stdlib/test-bz22786.c +++ b/stdlib/test-bz22786.c @@ -26,6 +26,7 @@ #include <unistd.h> #include <sys/stat.h> #include <sys/types.h> +#include <support/blob_repeat.h> #include <support/check.h> #include <support/support.h> #include <support/temp_file.h> @@ -39,17 +40,12 @@ do_test (void) const char *lnk = xasprintf ("%s/symlink", dir); const size_t path_len = (size_t) INT_MAX + strlen (lnk) + 1; - DIAG_PUSH_NEEDS_COMMENT; -#if __GNUC_PREREQ (7, 0) - /* GCC 7 warns about too-large allocations; here we need such - allocation to succeed for the test to work. */ - DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than="); -#endif - char *path = malloc (path_len); - DIAG_POP_NEEDS_COMMENT; + struct support_blob_repeat repeat + = support_blob_repeat_allocate ("a", 1, path_len); + char *path = repeat.start; if (path == NULL) { - printf ("malloc (%zu): %m\n", path_len); + printf ("Repeated allocation (%zu bytes): %m\n", path_len); /* On 31-bit s390 the malloc will always fail as we do not have so much memory, and we want to mark the test unsupported. Likewise on systems with little physical memory the test will @@ -62,7 +58,6 @@ do_test (void) /* Construct very long path = "/tmp/bz22786.XXXX/symlink/aaaa....." */ char *p = mempcpy (path, lnk, strlen (lnk)); *(p++) = '/'; - memset (p, 'a', path_len - (p - path) - 2); p[path_len - (p - path) - 1] = '\0'; /* This call crashes before the fix for bz22786 on 32-bit platforms. */ @@ -76,6 +71,7 @@ do_test (void) /* Cleanup. */ unlink (lnk); + support_blob_repeat_free (&repeat); return 0; } |