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0cc24d0e84
* -dt now with lowercase t
* test snippets now separated by real preprocessor statements
which is valid C also for other compilers
#if defined test_xxx
< test snippet x >
#elif defined test_yyy
< test snippet y >
#elif ...
#endif
* simpler implementation, behaves like -run if no 'test_...' macros
are seen, works with -E too
* for demonstration I combined some of the small tests for errors
and warnings (56..63,74) in "60_errors_and_warnings.c"
Also:
* libtcc.c:
put tcc_preprocess() and tcc_assemble() under the setjmp clause
to let them return to caller after errors. This is for -dt -E.
* tccgen.c:
- get rid of save/restore_parse_state(), macro_ptr is saved
by begin_macro anyway, now line_num too.
- use expr_eq for parsing _Generic's controlling_type
- set nocode_wanted with const_wanted. too, This is to keep
VT_JMP on vtop when parsing preprocessor expressions.
* tccpp.c: tcc -E: suppress trailing whitespace from lines with
comments (that -E removes) such as
NO_GOTPLT_ENTRY,\t /* never generate ... */
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/*****************************************************************************/
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/* test 'nodata_wanted' data output suppression */
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#if defined test_static_data_error
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void foo() {
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if (1) {
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static short w = (int)&foo; /* initializer not computable */
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}
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}
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#elif defined test_static_nodata_error
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void foo() {
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if (0) {
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static short w = (int)&foo; /* initializer not computable */
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}
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}
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#elif defined test_global_data_error
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void foo();
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static short w = (int)&foo; /* initializer not computable */
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#elif defined test_local_data_noerror
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void foo() {
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short w = &foo; /* 2 cast warnings */
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}
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#elif defined test_data_suppression
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#include <stdio.h>
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#define ASMLABELS(s) \
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__asm__(".global d"#s",t"#s"\n.data\nd"#s":\n.text\nt"#s":\n")
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#define PROG \
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static void *p = (void*)&main;\
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static char cc[] = "static string";\
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static double d = 8.0;\
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static struct __attribute__((packed)) {\
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unsigned x : 12;\
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unsigned char y : 7;\
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unsigned z : 28, a: 4, b: 5;\
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} s = { 0x333,0x44,0x555555,6,7 };\
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printf(" static data: %d - %.1f - %.1f - %s - %s\n",\
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sizeof 8.0, 8.0, d, __FUNCTION__, cc);\
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printf(" static bitfields: %x %x %x %x %x\n", s.x, s.y, s.z, s.a, s.b);
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int main()
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{
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extern char ds1[],ts1[];
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extern char ds2[],ts2[];
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extern char de1[],te1[];
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extern char de2[],te2[];
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printf("suppression off\n");
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if (1) {
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ASMLABELS(s1);
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PROG
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ASMLABELS(e1);
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}
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printf(" data length is %s\n", de1 - ds1 ? "not 0":"0");
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printf(" text length is %s\n", te1 - ts1 ? "not 0":"0");
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printf("suppression on\n");
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if (0) {
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ASMLABELS(s2);
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PROG
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ASMLABELS(e2);
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}
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printf(" data length is %x\n", de2 - ds2);
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printf(" text length is %X\n", te2 - ts2);
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return 0;
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}
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#endif
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