diff options
Diffstat (limited to 'gc.c')
| -rw-r--r-- | gc.c | 25 |
1 files changed, 24 insertions, 1 deletions
@@ -5663,16 +5663,39 @@ get_envparam_size(const char *name, size_t *default_value, size_t lower_bound) ssize_t val; if (ptr != NULL && *ptr) { + size_t unit = 0; char *end; #if SIZEOF_SIZE_T == SIZEOF_LONG_LONG val = strtoll(ptr, &end, 0); #else val = strtol(ptr, &end, 0); #endif - if (!*ptr || *end) { + switch (*end) { + case 'k': case 'K': + unit = 1024; + ++end; + break; + case 'm': case 'M': + unit = 1024*1024; + ++end; + break; + case 'g': case 'G': + unit = 1024*1024*1024; + ++end; + break; + } + while (*end && isspace(*end)) end++; + if (*end) { if (RTEST(ruby_verbose)) fprintf(stderr, "invalid string for %s: %s\n", name, ptr); return 0; } + if (unit > 0) { + if (val < -(ssize_t)(SIZE_MAX / 2 / unit) || (ssize_t)(SIZE_MAX / 2 / unit) < val) { + if (RTEST(ruby_verbose)) fprintf(stderr, "%s=%s is ignored because it overflows\n", name, ptr); + return 0; + } + val *= unit; + } if (val > 0 && (size_t)val > lower_bound) { if (RTEST(ruby_verbose)) { fprintf(stderr, "%s=%"PRIdSIZE" (default value: %"PRIdSIZE")\n", name, val, *default_value); |