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Diffstat (limited to 'libc/stdio/printf.c')
-rw-r--r--libc/stdio/printf.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/libc/stdio/printf.c b/libc/stdio/printf.c
index 8efa7dd5b..9654cda90 100644
--- a/libc/stdio/printf.c
+++ b/libc/stdio/printf.c
@@ -31,6 +31,7 @@
*
* ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION! */
+
#define _ISOC99_SOURCE /* for ULLONG primarily... */
#define _GNU_SOURCE
#define _STDIO_UTILITY /* We're using _uintmaxtostr. */
@@ -54,7 +55,12 @@
/**********************************************************************/
+/* These provide some control over printf's feature set */
#define __STDIO_PRINTF_FLOAT
+#define __STDIO_PRINTF_M_SUPPORT
+
+
+/**********************************************************************/
#if defined(__UCLIBC__) && !defined(__UCLIBC_HAS_FLOATS__)
#undef __STDIO_PRINTF_FLOAT
@@ -118,7 +124,9 @@ enum {
CONV_x, CONV_X, CONV_o, CONV_u, CONV_d, CONV_i,
CONV_f, CONV_F, CONV_e, CONV_E, CONV_g, CONV_G, CONV_a, CONV_A,
CONV_C, CONV_S, CONV_c, CONV_s,
+#ifdef __STDIO_PRINTF_M_SUPPORT
CONV_m,
+#endif
CONV_custom0 /* must be last */
};
@@ -878,11 +886,13 @@ extern int _ppfs_parsespec(ppfs_t *ppfs)
if (!*p) {
#ifdef __STDIO_GLIBC_CUSTOM_PRINTF
/* TODO -- gnu %m support build option. */
+#ifdef __STDIO_PRINTF_M_SUPPORT
if (*fmt == 'm') {
conv_num = CONV_m;
ppfs->num_data_args = 0;
goto DONE;
}
+#endif
/* Handle custom arg -- WARNING -- overwrites p!!! */
conv_num = CONV_custom0;
@@ -1166,9 +1176,11 @@ int _do_one_spec(FILE * __restrict stream, register ppfs_t *ppfs, int *count)
s[1] = 0;
slen = 1;
}
+#ifdef __STDIO_PRINTF_M_SUPPORT
} else if (ppfs->conv_num == CONV_m) {
s = strerror(errno);
goto SET_STRING_LEN;
+#endif
} else {
assert(ppfs->conv_num == CONV_custom0);